20359860864 has 64 divisors (see below), whose sum is σ = 61806728640. Its totient is φ = 5817102336.

The previous prime is 20359860847. The next prime is 20359860877. The reversal of 20359860864 is 46806895302.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3784489 + ... + 3789864.

It is an arithmetic number, because the mean of its divisors is an integer number (965730135).

Almost surely, 2^20359860864 is an apocalyptic number.

20359860864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20359860864 is an abundant number, since it is smaller than the sum of its proper divisors (41446867776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20359860864 is an equidigital number, since it uses as much as digits as its factorization.

20359860864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7574377 (or 7574365 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 51.

It can be divided in two parts, 203598 and 60864, that added together give a palindrome (264462).

The spelling of 20359860864 in words is "twenty billion, three hundred fifty-nine million, eight hundred sixty thousand, eight hundred sixty-four".