80191012 has 24 divisors (see below), whose sum is σ = 153381312. Its totient is φ = 36381600.

The previous prime is 80190983. The next prime is 80191037. The reversal of 80191012 is 21019108.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27337 + ... + 30127.

It is an arithmetic number, because the mean of its divisors is an integer number (6390888).

Almost surely, 2^80191012 is an apocalyptic number.

It is an amenable number.

80191012 is a deficient number, since it is larger than the sum of its proper divisors (73190300).

80191012 is a wasteful number, since it uses less digits than its factorization.

80191012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3459 (or 3457 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 80191012 is about 8954.9434392407. The cubic root of 80191012 is about 431.2296011635.

The spelling of 80191012 in words is "eighty million, one hundred ninety-one thousand, twelve".