4415521213 has 16 divisors (see below), whose sum is σ = 4534438320. Its totient is φ = 4298085376.

The previous prime is 4415521193. The next prime is 4415521219. The reversal of 4415521213 is 3121255144.

It can be written as a sum of positive squares in 8 ways, for example, as 108618084 + 4306903129 = 10422^2 + 65627^2 .

It is a cyclic number.

It is not a de Polignac number, because 4415521213 - 2⁹ = 4415520701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4415521219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4518981 + ... + 4519957.

It is an arithmetic number, because the mean of its divisors is an integer number (283402395).

Almost surely, 2^4415521213 is an apocalyptic number.

It is an amenable number.

4415521213 is a deficient number, since it is larger than the sum of its proper divisors (118917107).

4415521213 is a wasteful number, since it uses less digits than its factorization.

4415521213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1616.

The product of its digits is 4800, while the sum is 28.

The square root of 4415521213 is about 66449.3883568540. The cubic root of 4415521213 is about 1640.5670769708.

Adding to 4415521213 its reverse (3121255144), we get a palindrome (7536776357).

The spelling of 4415521213 in words is "four billion, four hundred fifteen million, five hundred twenty-one thousand, two hundred thirteen".