16601616032 has 12 divisors (see below), whose sum is σ = 32684431626. Its totient is φ = 8300808000.

The previous prime is 16601616019. The next prime is 16601616049. The reversal of 16601616032 is 23061610661.

It can be written as a sum of positive squares in only one way, i.e., 13343946256 + 3257669776 = 115516^2 + 57076^2 .

It is a super-2 number, since 2×16601616032² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 518800501 = 16601616032 / (1 + 6 + 6 + 0 + 1 + 6 + 1 + 6 + 0 + 3 + 2).

It is a self number, because there is not a number n which added to its sum of digits gives 16601616032.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259400219 + ... + 259400282.

Almost surely, 2^16601616032 is an apocalyptic number.

It is an amenable number.

16601616032 is a deficient number, since it is larger than the sum of its proper divisors (16082815594).

16601616032 is an equidigital number, since it uses as much as digits as its factorization.

16601616032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518800511 (or 518800503 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The spelling of 16601616032 in words is "sixteen billion, six hundred one million, six hundred sixteen thousand, thirty-two".