56631361153 has 4 divisors (see below), whose sum is σ = 58584166740. Its totient is φ = 54678555568.

The previous prime is 56631361123. The next prime is 56631361169. The reversal of 56631361153 is 35116313665.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43784725504 + 12846635649 = 209248^2 + 113343^2 .

It is a cyclic number.

It is not a de Polignac number, because 56631361153 - 2⁵ = 56631361121 is a prime.

It is a super-2 number, since 2×56631361153² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56631361103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 976402750 + ... + 976402807.

It is an arithmetic number, because the mean of its divisors is an integer number (14646041685).

Almost surely, 2^56631361153 is an apocalyptic number.

It is an amenable number.

56631361153 is a deficient number, since it is larger than the sum of its proper divisors (1952805587).

56631361153 is a wasteful number, since it uses less digits than its factorization.

56631361153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1952805586.

The product of its digits is 145800, while the sum is 40.

The spelling of 56631361153 in words is "fifty-six billion, six hundred thirty-one million, three hundred sixty-one thousand, one hundred fifty-three".