16516425636 has 48 divisors (see below), whose sum is σ = 43522353280. Its totient is φ = 5415219360.

The previous prime is 16516425589. The next prime is 16516425643. The reversal of 16516425636 is 63652461561.

16516425636 is a `hidden beast` number, since 1 + 6 + 5 + 1 + 6 + 4 + 2 + 5 + 636 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 16516425591 and 16516425600.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1246936 + ... + 1260111.

Almost surely, 2^16516425636 is an apocalyptic number.

It is an amenable number.

16516425636 is an abundant number, since it is smaller than the sum of its proper divisors (27005927644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16516425636 is a wasteful number, since it uses less digits than its factorization.

16516425636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2507121 (or 2507113 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The spelling of 16516425636 in words is "sixteen billion, five hundred sixteen million, four hundred twenty-five thousand, six hundred thirty-six".