38644041720 has 64 divisors (see below), whose sum is σ = 119065439520. Its totient is φ = 10026561024.

The previous prime is 38644041719. The next prime is 38644041731. The reversal of 38644041720 is 2714044683.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4347367 + ... + 4356246.

Almost surely, 2^38644041720 is an apocalyptic number.

38644041720 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38644041720 is an abundant number, since it is smaller than the sum of its proper divisors (80421397800).

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

38644041720 is a wasteful number, since it uses less digits than its factorization.

38644041720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8703664 (or 8703660 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 39.

The spelling of 38644041720 in words is "thirty-eight billion, six hundred forty-four million, forty-one thousand, seven hundred twenty".