12890914056 has 24 divisors (see below), whose sum is σ = 34912892430. Its totient is φ = 4296971328.

The previous prime is 12890914027. The next prime is 12890914067. The reversal of 12890914056 is 65041909821.

It can be written as a sum of positive squares in only one way, i.e., 11081772900 + 1809141156 = 105270^2 + 42534^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×12890914056² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 89520165 + ... + 89520308.

Almost surely, 2^12890914056 is an apocalyptic number.

It is an amenable number.

12890914056 is an abundant number, since it is smaller than the sum of its proper divisors (22021978374).

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

12890914056 is a wasteful number, since it uses less digits than its factorization.

12890914056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179040485 (or 179040478 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 12890914056 in words is "twelve billion, eight hundred ninety million, nine hundred fourteen thousand, fifty-six".