64928252490624 has 48 divisors (see below), whose sum is σ = 186837809904720. Its totient is φ = 21642750829824.

The previous prime is 64928252490623. The next prime is 64928252490631. The reversal of 64928252490624 is 42609425282946.

64928252490624 is a `hidden beast` number, since 6 + 4 + 9 + 2 + 82 + 5 + 2 + 490 + 62 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64928252490623) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28180663992 + ... + 28180666295.

It is an arithmetic number, because the mean of its divisors is an integer number (3892454373015).

Almost surely, 2^{64928252490624} is an apocalyptic number.

64928252490624 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

64928252490624 is an abundant number, since it is smaller than the sum of its proper divisors (121909557414096).

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

64928252490624 is a wasteful number, since it uses less digits than its factorization.

64928252490624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56361330307 (or 56361330292 counting only the distinct ones).

The product of its (nonzero) digits is 119439360, while the sum is 63.

The spelling of 64928252490624 in words is "sixty-four trillion, nine hundred twenty-eight billion, two hundred fifty-two million, four hundred ninety thousand, six hundred twenty-four".