38629721880 has 64 divisors (see below), whose sum is σ = 128765743200. Its totient is φ = 10301258880.

The previous prime is 38629721833. The next prime is 38629721887. The reversal of 38629721880 is 8812792683.

It is a happy number.

38629721880 is a `hidden beast` number, since 3 + 8 + 629 + 7 + 2 + 1 + 8 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38629721887) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 17883051 + ... + 17885210.

Almost surely, 2^38629721880 is an apocalyptic number.

38629721880 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38629721880 is an abundant number, since it is smaller than the sum of its proper divisors (90136021320).

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

38629721880 is a wasteful number, since it uses less digits than its factorization.

38629721880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35768281 (or 35768271 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 38629721880 in words is "thirty-eight billion, six hundred twenty-nine million, seven hundred twenty-one thousand, eight hundred eighty".