16616031264 has 72 divisors (see below), whose sum is σ = 54002108160. Its totient is φ = 4747436928.

The previous prime is 16616031241. The next prime is 16616031283. The reversal of 16616031264 is 46213061661.

It is a happy number.

16616031264 is a `hidden beast` number, since 1 + 6 + 616 + 0 + 31 + 2 + 6 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4119024 + ... + 4123055.

It is an arithmetic number, because the mean of its divisors is an integer number (750029280).

Almost surely, 2^16616031264 is an apocalyptic number.

16616031264 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16616031264 is an abundant number, since it is smaller than the sum of its proper divisors (37386076896).

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

16616031264 is a wasteful number, since it uses less digits than its factorization.

16616031264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8242102 (or 8242091 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The spelling of 16616031264 in words is "sixteen billion, six hundred sixteen million, thirty-one thousand, two hundred sixty-four".