264440634663000 has 64 divisors (see below), whose sum is σ = 825054780157920. Its totient is φ = 70517502576000.

The previous prime is 264440634662987. The next prime is 264440634663001. The reversal of 264440634663000 is 366436044462.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264440634663001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44073436111 + ... + 44073442110.

Almost surely, 2^{264440634663000} is an apocalyptic number.

264440634663000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

264440634663000 is an abundant number, since it is smaller than the sum of its proper divisors (560614145494920).

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

264440634663000 is a wasteful number, since it uses less digits than its factorization.

264440634663000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88146878245 (or 88146878231 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 48.

The spelling of 264440634663000 in words is "two hundred sixty-four trillion, four hundred forty billion, six hundred thirty-four million, six hundred sixty-three thousand".