56400140461 has 4 divisors (see below), whose sum is σ = 64457303392. Its totient is φ = 48342977532.

The previous prime is 56400140449. The next prime is 56400140507. The reversal of 56400140461 is 16404100465.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56400140461 - 2⁹ = 56400139949 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 (56400140411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4028581455 + ... + 4028581468.

It is an arithmetic number, because the mean of its divisors is an integer number (16114325848).

Almost surely, 2^56400140461 is an apocalyptic number.

It is an amenable number.

56400140461 is a deficient number, since it is larger than the sum of its proper divisors (8057162931).

56400140461 is an equidigital number, since it uses as much as digits as its factorization.

56400140461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8057162930.

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 56400140461 in words is "fifty-six billion, four hundred million, one hundred forty thousand, four hundred sixty-one".