2156888982264 has 64 divisors (see below), whose sum is σ = 5566713984000. Its totient is φ = 695702031360.

The previous prime is 2156888982253. The next prime is 2156888982271. The reversal of 2156888982264 is 4622898886512.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7695907 + ... + 7971245.

It is an arithmetic number, because the mean of its divisors is an integer number (86979906000).

Almost surely, 2^{2156888982264} is an apocalyptic number.

2156888982264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2156888982264 is an abundant number, since it is smaller than the sum of its proper divisors (3409825001736).

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

2156888982264 is a wasteful number, since it uses less digits than its factorization.

2156888982264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285908 (or 285904 counting only the distinct ones).

The product of its digits is 212336640, while the sum is 69.

The spelling of 2156888982264 in words is "two trillion, one hundred fifty-six billion, eight hundred eighty-eight million, nine hundred eighty-two thousand, two hundred sixty-four".