16516651536 has 120 divisors (see below), whose sum is σ = 57629567424. Its totient is φ = 4290036480.

The previous prime is 16516651523. The next prime is 16516651553. The reversal of 16516651536 is 63515661561.

16516651536 is a `hidden beast` number, since 1 + 6 + 5 + 1 + 66 + 51 + 536 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 16516651491 and 16516651500.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 733711 + ... + 755886.

Almost surely, 2^16516651536 is an apocalyptic number.

16516651536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16516651536 is an abundant number, since it is smaller than the sum of its proper divisors (41112915888).

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

16516651536 is a wasteful number, since it uses less digits than its factorization.

16516651536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489629 (or 1489620 counting only the distinct ones).

The product of its digits is 486000, while the sum is 45.

The spelling of 16516651536 in words is "sixteen billion, five hundred sixteen million, six hundred fifty-one thousand, five hundred thirty-six".