20559792264 has 64 divisors (see below), whose sum is σ = 56186714880. Its totient is φ = 6217512000.

The previous prime is 20559792259. The next prime is 20559792271. The reversal of 20559792264 is 46229795502.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50319 + ... + 208929.

It is an arithmetic number, because the mean of its divisors is an integer number (877917420).

Almost surely, 2^20559792264 is an apocalyptic number.

20559792264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20559792264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28093357440).

20559792264 is an abundant number, since it is smaller than the sum of its proper divisors (35626922616).

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

20559792264 is a wasteful number, since it uses less digits than its factorization.

20559792264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159122 (or 159118 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 51.

The spelling of 20559792264 in words is "twenty billion, five hundred fifty-nine million, seven hundred ninety-two thousand, two hundred sixty-four".