56431544513465 has 32 divisors (see below), whose sum is σ = 74040262189056. Its totient is φ = 40948856890560.

The previous prime is 56431544513453. The next prime is 56431544513471.

56431544513465 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 56431544513465 - 2⁸ = 56431544513209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56431544513465.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50080244 + ... + 51194666.

It is an arithmetic number, because the mean of its divisors is an integer number (2313758193408).

Almost surely, 2^{56431544513465} is an apocalyptic number.

56431544513465 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56431544513465 is a deficient number, since it is larger than the sum of its proper divisors (17608717675591).

56431544513465 is a wasteful number, since it uses less digits than its factorization.

56431544513465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116509.

The product of its digits is 51840000, while the sum is 56.

The spelling of 56431544513465 in words is "fifty-six trillion, four hundred thirty-one billion, five hundred forty-four million, five hundred thirteen thousand, four hundred sixty-five".