56155464012 has 12 divisors (see below), whose sum is σ = 131029416056. Its totient is φ = 18718488000.

The previous prime is 56155463981. The next prime is 56155464031. The reversal of 56155464012 is 21046455165.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×56155464012² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2339810989 + ... + 2339811012.

Almost surely, 2^56155464012 is an apocalyptic number.

It is an amenable number.

56155464012 is an abundant number, since it is smaller than the sum of its proper divisors (74873952044).

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

56155464012 is a wasteful number, since it uses less digits than its factorization.

56155464012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4679622008 (or 4679622006 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 39.

The spelling of 56155464012 in words is "fifty-six billion, one hundred fifty-five million, four hundred sixty-four thousand, twelve".