264959204520 has 128 divisors (see below), whose sum is σ = 842151997440. Its totient is φ = 66458726400.

The previous prime is 264959204509. The next prime is 264959204551. The reversal of 264959204520 is 25402959462.

264959204520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 264959204520.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3353470 + ... + 3431570.

It is an arithmetic number, because the mean of its divisors is an integer number (6579312480).

Almost surely, 2^264959204520 is an apocalyptic number.

264959204520 is a gapful number since it is divisible by the number (20) 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 264959204520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (421075998720).

264959204520 is an abundant number, since it is smaller than the sum of its proper divisors (577192792920).

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

264959204520 is a wasteful number, since it uses less digits than its factorization.

264959204520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79795 (or 79791 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 48.

The spelling of 264959204520 in words is "two hundred sixty-four billion, nine hundred fifty-nine million, two hundred four thousand, five hundred twenty".