16956396864 has 336 divisors, whose sum is σ = 55232686080. Its totient is φ = 4927104000.

The previous prime is 16956396851. The next prime is 16956396929. The reversal of 16956396864 is 46869365961.

16956396864 is a `hidden beast` number, since 1 + 6 + 9 + 563 + 9 + 6 + 8 + 64 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25730167 + ... + 25730825.

Almost surely, 2^16956396864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16956396864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27616343040).

16956396864 is an abundant number, since it is smaller than the sum of its proper divisors (38276289216).

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

16956396864 is a wasteful number, since it uses less digits than its factorization.

16956396864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850 (or 837 counting only the distinct ones).

The product of its digits is 50388480, while the sum is 63.

The spelling of 16956396864 in words is "sixteen billion, nine hundred fifty-six million, three hundred ninety-six thousand, eight hundred sixty-four".