264657924640 has 24 divisors (see below), whose sum is σ = 625254347340. Its totient is φ = 105863169792.

The previous prime is 264657924611. The next prime is 264657924659. The reversal of 264657924640 is 46429756462.

It is a happy number.

264657924640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 212229747856 + 52428176784 = 460684^2 + 228972^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 827055855 + ... + 827056174.

Almost surely, 2^264657924640 is an apocalyptic number.

264657924640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

264657924640 is an abundant number, since it is smaller than the sum of its proper divisors (360596422700).

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

264657924640 is a wasteful number, since it uses less digits than its factorization.

264657924640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654112044 (or 1654112036 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 55.

The spelling of 264657924640 in words is "two hundred sixty-four billion, six hundred fifty-seven million, nine hundred twenty-four thousand, six hundred forty".