1011066881 has 4 divisors (see below), whose sum is σ = 1102982064. Its totient is φ = 919151700.

The previous prime is 1011066851. The next prime is 1011066899. The reversal of 1011066881 is 1886601101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1011066881 - 2¹⁸ = 1010804737 is a prime.

It is a super-2 number, since 2×1011066881² = 2044512475710136322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011066811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45957575 + ... + 45957596.

It is an arithmetic number, because the mean of its divisors is an integer number (275745516).

Almost surely, 2^1011066881 is an apocalyptic number.

1011066881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1011066881 is a deficient number, since it is larger than the sum of its proper divisors (91915183).

1011066881 is an equidigital number, since it uses as much as digits as its factorization.

1011066881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91915182.

The product of its (nonzero) digits is 2304, while the sum is 32.

The square root of 1011066881 is about 31797.2778866368. The cubic root of 1011066881 is about 1003.6754349609.

Adding to 1011066881 its reverse (1886601101), we get a palindrome (2897667982).

The spelling of 1011066881 in words is "one billion, eleven million, sixty-six thousand, eight hundred eighty-one".