56772457631 has 4 divisors (see below), whose sum is σ = 58603827264. Its totient is φ = 54941088000.

The previous prime is 56772457607. The next prime is 56772457667. The reversal of 56772457631 is 13675427765.

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 56772457631 - 2¹⁴ = 56772441247 is a prime.

It is a super-2 number, since 2×56772457631² (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 (56777457631) 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, 915684770 + ... + 915684831.

It is an arithmetic number, because the mean of its divisors is an integer number (14650956816).

Almost surely, 2^56772457631 is an apocalyptic number.

56772457631 is a deficient number, since it is larger than the sum of its proper divisors (1831369633).

56772457631 is a wasteful number, since it uses less digits than its factorization.

56772457631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1831369632.

The product of its digits is 7408800, while the sum is 53.

The spelling of 56772457631 in words is "fifty-six billion, seven hundred seventy-two million, four hundred fifty-seven thousand, six hundred thirty-one".