264320440620 has 48 divisors (see below), whose sum is σ = 740281694208. Its totient is φ = 70467883200.

The previous prime is 264320440609. The next prime is 264320440649. The reversal of 264320440620 is 26044023462.

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, 305356 + ... + 788595.

It is an arithmetic number, because the mean of its divisors is an integer number (15422535296).

Almost surely, 2^264320440620 is an apocalyptic number.

264320440620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

264320440620 is an abundant number, since it is smaller than the sum of its proper divisors (475961253588).

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

264320440620 is a wasteful number, since it uses less digits than its factorization.

264320440620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097990 (or 1097988 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 33.

The spelling of 264320440620 in words is "two hundred sixty-four billion, three hundred twenty million, four hundred forty thousand, six hundred twenty".