56109287465 has 32 divisors (see below), whose sum is σ = 86653255680. Its totient is φ = 33848913600.

The previous prime is 56109287441. The next prime is 56109287501. The reversal of 56109287465 is 56478290165.

It is not a de Polignac number, because 56109287465 - 2⁸ = 56109287209 is a prime.

It is a super-2 number, since 2×56109287465² (a number of 22 digits) contains 22 as substring.

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, 2338685 + ... + 2362554.

It is an arithmetic number, because the mean of its divisors is an integer number (2707914240).

Almost surely, 2^56109287465 is an apocalyptic number.

56109287465 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56109287465 is a deficient number, since it is larger than the sum of its proper divisors (30543968215).

56109287465 is a wasteful number, since it uses less digits than its factorization.

56109287465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4701293.

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 56109287465 in words is "fifty-six billion, one hundred nine million, two hundred eighty-seven thousand, four hundred sixty-five".