56663026631 has 4 divisors (see below), whose sum is σ = 56694915312. Its totient is φ = 56631137952.

The previous prime is 56663026603. The next prime is 56663026633. The reversal of 56663026631 is 13662036665.

56663026631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 56663026631 - 2¹⁴ = 56663010247 is a prime.

It is a super-2 number, since 2×56663026631² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56663026633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15941675 + ... + 15945228.

It is an arithmetic number, because the mean of its divisors is an integer number (14173728828).

Almost surely, 2^56663026631 is an apocalyptic number.

56663026631 is a deficient number, since it is larger than the sum of its proper divisors (31888681).

56663026631 is a wasteful number, since it uses less digits than its factorization.

56663026631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31888680.

The product of its (nonzero) digits is 699840, while the sum is 44.

The spelling of 56663026631 in words is "fifty-six billion, six hundred sixty-three million, twenty-six thousand, six hundred thirty-one".