64464252624 has 40 divisors (see below), whose sum is σ = 185036281920. Its totient is φ = 21488084064.

The previous prime is 64464252623. The next prime is 64464252649. The reversal of 64464252624 is 42625246446.

64464252624 is a `hidden beast` number, since 6 + 44 + 64 + 2 + 526 + 24 = 666.

64464252624 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 64464252624.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64464252623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74610972 + ... + 74611835.

It is an arithmetic number, because the mean of its divisors is an integer number (4625907048).

Almost surely, 2^64464252624 is an apocalyptic number.

It is an amenable number.

64464252624 is an abundant number, since it is smaller than the sum of its proper divisors (120572029296).

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

64464252624 is a wasteful number, since it uses less digits than its factorization.

64464252624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149222824 (or 149222812 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 45.

The spelling of 64464252624 in words is "sixty-four billion, four hundred sixty-four million, two hundred fifty-two thousand, six hundred twenty-four".