264257027664 has 80 divisors (see below), whose sum is σ = 780408717312. Its totient is φ = 75480591744.

The previous prime is 264257027651. The next prime is 264257027669. The reversal of 264257027664 is 466720752462.

It is a super-2 number, since 2×264257027664² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264257027669) 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, 1094137 + ... + 1313639.

Almost surely, 2^264257027664 is an apocalyptic number.

264257027664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

264257027664 is an abundant number, since it is smaller than the sum of its proper divisors (516151689648).

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

264257027664 is a wasteful number, since it uses less digits than its factorization.

264257027664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223104 (or 223098 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 51.

The spelling of 264257027664 in words is "two hundred sixty-four billion, two hundred fifty-seven million, twenty-seven thousand, six hundred sixty-four".