56051612155 has 32 divisors (see below), whose sum is σ = 84801323520. Its totient is φ = 34548645120.

The previous prime is 56051612153. The next prime is 56051612167. The reversal of 56051612155 is 55121615065.

It is not a de Polignac number, because 56051612155 - 2¹ = 56051612153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56051612153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 783649 + ... + 852178.

It is an arithmetic number, because the mean of its divisors is an integer number (2650041360).

Almost surely, 2^56051612155 is an apocalyptic number.

56051612155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

56051612155 is a deficient number, since it is larger than the sum of its proper divisors (28749711365).

56051612155 is a wasteful number, since it uses less digits than its factorization.

56051612155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1635939.

The product of its (nonzero) digits is 45000, while the sum is 37.

The spelling of 56051612155 in words is "fifty-six billion, fifty-one million, six hundred twelve thousand, one hundred fifty-five".