638712025024 has 28 divisors (see below), whose sum is σ = 1267473110464. Its totient is φ = 319348721664.

The previous prime is 638712025001. The next prime is 638712025051. The reversal of 638712025024 is 420520217836.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3702352 + ... + 3871024.

Almost surely, 2^638712025024 is an apocalyptic number.

638712025024 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

638712025024 is a deficient number, since it is larger than the sum of its proper divisors (628761085440).

638712025024 is a wasteful number, since it uses less digits than its factorization.

638712025024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227852 (or 227842 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 638712025024 in words is "six hundred thirty-eight billion, seven hundred twelve million, twenty-five thousand, twenty-four".