16312180864 has 64 divisors (see below), whose sum is σ = 37500128640. Its totient is φ = 6923022336.

The previous prime is 16312180847. The next prime is 16312180883. The reversal of 16312180864 is 46808121361.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3912 + ... + 180664.

It is an arithmetic number, because the mean of its divisors is an integer number (585939510).

Almost surely, 2^16312180864 is an apocalyptic number.

16312180864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16312180864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18750064320).

16312180864 is an abundant number, since it is smaller than the sum of its proper divisors (21187947776).

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

16312180864 is a wasteful number, since it uses less digits than its factorization.

16312180864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176877 (or 176865 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The spelling of 16312180864 in words is "sixteen billion, three hundred twelve million, one hundred eighty thousand, eight hundred sixty-four".