56689081953 has 32 divisors (see below), whose sum is σ = 90171924480. Its totient is φ = 30996535680.

The previous prime is 56689081951. The next prime is 56689081997. The reversal of 56689081953 is 35918098665.

It is not a de Polignac number, because 56689081953 - 2¹ = 56689081951 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56689081951) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 431275 + ... + 547152.

It is an arithmetic number, because the mean of its divisors is an integer number (2817872640).

Almost surely, 2^56689081953 is an apocalyptic number.

It is an amenable number.

56689081953 is a deficient number, since it is larger than the sum of its proper divisors (33482842527).

56689081953 is a wasteful number, since it uses less digits than its factorization.

56689081953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978557.

The product of its (nonzero) digits is 13996800, while the sum is 60.

The spelling of 56689081953 in words is "fifty-six billion, six hundred eighty-nine million, eighty-one thousand, nine hundred fifty-three".