16520172841232 has 80 divisors (see below), whose sum is σ = 32219373542400. Its totient is φ = 8205695877120.

The previous prime is 16520172841189. The next prime is 16520172841247. The reversal of 16520172841232 is 23214827102561.

It is a super-2 number, since 2×16520172841232² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

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, 4418338019 + ... + 4418341757.

It is an arithmetic number, because the mean of its divisors is an integer number (402742169280).

Almost surely, 2^{16520172841232} is an apocalyptic number.

It is an amenable number.

16520172841232 is a deficient number, since it is larger than the sum of its proper divisors (15699200701168).

16520172841232 is a wasteful number, since it uses less digits than its factorization.

16520172841232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6624 (or 6618 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 44.

Adding to 16520172841232 its reverse (23214827102561), we get a palindrome (39734999943793).

The spelling of 16520172841232 in words is "sixteen trillion, five hundred twenty billion, one hundred seventy-two million, eight hundred forty-one thousand, two hundred thirty-two".