56861251635 has 16 divisors (see below), whose sum is σ = 94115175840. Its totient is φ = 29280276480.

The previous prime is 56861251633. The next prime is 56861251651. The reversal of 56861251635 is 53615216865.

It is a happy number.

It is not a de Polignac number, because 56861251635 - 2¹ = 56861251633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56861251633) 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, 65357326 + ... + 65358195.

It is an arithmetic number, because the mean of its divisors is an integer number (5882198490).

Almost surely, 2^56861251635 is an apocalyptic number.

56861251635 is a deficient number, since it is larger than the sum of its proper divisors (37253924205).

56861251635 is a wasteful number, since it uses less digits than its factorization.

56861251635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130715558.

The product of its digits is 1296000, while the sum is 48.

The spelling of 56861251635 in words is "fifty-six billion, eight hundred sixty-one million, two hundred fifty-one thousand, six hundred thirty-five".