16512640025013 has 12 divisors (see below), whose sum is σ = 26019917615328. Its totient is φ = 10007660621160.

The previous prime is 16512640024997. The next prime is 16512640025027. The reversal of 16512640025013 is 31052004621561.

16512640025013 is a `hidden beast` number, since 1 + 6 + 5 + 1 + 2 + 640 + 0 + 2 + 5 + 0 + 1 + 3 = 666.

It is not a de Polignac number, because 16512640025013 - 2⁴ = 16512640024997 is a prime.

It is a super-2 number, since 2×16512640025013² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16512640025083) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83397171745 + ... + 83397171942.

It is an arithmetic number, because the mean of its divisors is an integer number (2168326467944).

Almost surely, 2^{16512640025013} is an apocalyptic number.

It is an amenable number.

16512640025013 is a deficient number, since it is larger than the sum of its proper divisors (9507277590315).

16512640025013 is a wasteful number, since it uses less digits than its factorization.

16512640025013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166794343704 (or 166794343701 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

Adding to 16512640025013 its reverse (31052004621561), we get a palindrome (47564644646574).

The spelling of 16512640025013 in words is "sixteen trillion, five hundred twelve billion, six hundred forty million, twenty-five thousand, thirteen".