56155510065 has 8 divisors (see below), whose sum is σ = 89848816128. Its totient is φ = 29949605360.

The previous prime is 56155510031. The next prime is 56155510123. The reversal of 56155510065 is 56001555165.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56155510065 - 2⁷ = 56155509937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1871850321 + ... + 1871850350.

It is an arithmetic number, because the mean of its divisors is an integer number (11231102016).

Almost surely, 2^56155510065 is an apocalyptic number.

It is an amenable number.

56155510065 is a deficient number, since it is larger than the sum of its proper divisors (33693306063).

56155510065 is a wasteful number, since it uses less digits than its factorization.

56155510065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3743700679.

The product of its (nonzero) digits is 112500, while the sum is 39.

It can be divided in two parts, 561555100 and 65, that added together give a palindrome (561555165).

The spelling of 56155510065 in words is "fifty-six billion, one hundred fifty-five million, five hundred ten thousand, sixty-five".