56400859361 has 16 divisors (see below), whose sum is σ = 70651235328. Its totient is φ = 43740421200.

The previous prime is 56400859343. The next prime is 56400859477. The reversal of 56400859361 is 16395800465.

It is a happy number.

It is not a de Polignac number, because 56400859361 - 2⁶ = 56400859297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56400859331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1719485 + ... + 1751978.

It is an arithmetic number, because the mean of its divisors is an integer number (4415702208).

Almost surely, 2^56400859361 is an apocalyptic number.

It is an amenable number.

56400859361 is a deficient number, since it is larger than the sum of its proper divisors (14250375967).

56400859361 is a wasteful number, since it uses less digits than its factorization.

56400859361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3471692.

The product of its (nonzero) digits is 777600, while the sum is 47.

The spelling of 56400859361 in words is "fifty-six billion, four hundred million, eight hundred fifty-nine thousand, three hundred sixty-one".