56511655156 has 48 divisors (see below), whose sum is σ = 111944105280. Its totient is φ = 24726240000.

The previous prime is 56511655049. The next prime is 56511655163. The reversal of 56511655156 is 65155611565.

It is a happy number.

It is a super-2 number, since 2×56511655156² (a number of 22 digits) contains 22 as substring.

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, 355456 + ... + 489256.

It is an arithmetic number, because the mean of its divisors is an integer number (2332168860).

Almost surely, 2^56511655156 is an apocalyptic number.

It is an amenable number.

56511655156 is a deficient number, since it is larger than the sum of its proper divisors (55432450124).

56511655156 is a wasteful number, since it uses less digits than its factorization.

56511655156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134176 (or 134174 counting only the distinct ones).

The product of its digits is 675000, while the sum is 46.

The spelling of 56511655156 in words is "fifty-six billion, five hundred eleven million, six hundred fifty-five thousand, one hundred fifty-six".