16504520356 has 6 divisors (see below), whose sum is σ = 28882910630. Its totient is φ = 8252260176.

The previous prime is 16504520323. The next prime is 16504520359. The reversal of 16504520356 is 65302540561.

It can be written as a sum of positive squares in only one way, i.e., 16388096256 + 116424100 = 128016^2 + 10790^2 .

It is not an unprimeable number, because it can be changed into a prime (16504520359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2063065041 + ... + 2063065048.

Almost surely, 2^16504520356 is an apocalyptic number.

It is an amenable number.

16504520356 is a deficient number, since it is larger than the sum of its proper divisors (12378390274).

16504520356 is a wasteful number, since it uses less digits than its factorization.

16504520356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4126130093 (or 4126130091 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 37.

The spelling of 16504520356 in words is "sixteen billion, five hundred four million, five hundred twenty thousand, three hundred fifty-six".