56431674661 has 8 divisors (see below), whose sum is σ = 57835578944. Its totient is φ = 55031931360.

The previous prime is 56431674583. The next prime is 56431674697. The reversal of 56431674661 is 16647613465.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56431674661 - 2²¹ = 56429577509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56431674361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1012776 + ... + 1067041.

It is an arithmetic number, because the mean of its divisors is an integer number (7229447368).

Almost surely, 2^56431674661 is an apocalyptic number.

It is an amenable number.

56431674661 is a deficient number, since it is larger than the sum of its proper divisors (1403904283).

56431674661 is a wasteful number, since it uses less digits than its factorization.

56431674661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080491.

The product of its digits is 2177280, while the sum is 49.

The spelling of 56431674661 in words is "fifty-six billion, four hundred thirty-one million, six hundred seventy-four thousand, six hundred sixty-one".