56015501565 has 16 divisors (see below), whose sum is σ = 89630236800. Its totient is φ = 29873122752.

The previous prime is 56015501561. The next prime is 56015501587. The reversal of 56015501565 is 56510551065.

It is not a de Polignac number, because 56015501565 - 2² = 56015501561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56015501561) by changing a digit.

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, 164376 + ... + 372894.

It is an arithmetic number, because the mean of its divisors is an integer number (5601889800).

Almost surely, 2^56015501565 is an apocalyptic number.

It is an amenable number.

56015501565 is a deficient number, since it is larger than the sum of its proper divisors (33614735235).

56015501565 is a wasteful number, since it uses less digits than its factorization.

56015501565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226436.

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

The spelling of 56015501565 in words is "fifty-six billion, fifteen million, five hundred one thousand, five hundred sixty-five".