56131236563 has 16 divisors (see below), whose sum is σ = 57929195520. Its totient is φ = 54361417056.

The previous prime is 56131236559. The next prime is 56131236593. The reversal of 56131236563 is 36563213165.

It is a cyclic number.

It is not a de Polignac number, because 56131236563 - 2² = 56131236559 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56131236563.

It is not an unprimeable number, because it can be changed into a prime (56131236503) 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, 1734293 + ... + 1766361.

It is an arithmetic number, because the mean of its divisors is an integer number (3620574720).

Almost surely, 2^56131236563 is an apocalyptic number.

56131236563 is a deficient number, since it is larger than the sum of its proper divisors (1797958957).

56131236563 is a wasteful number, since it uses less digits than its factorization.

56131236563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32506.

The product of its digits is 291600, while the sum is 41.

The spelling of 56131236563 in words is "fifty-six billion, one hundred thirty-one million, two hundred thirty-six thousand, five hundred sixty-three".