38720450878938 has 64 divisors (see below), whose sum is σ = 91107877248000. Its totient is φ = 12147467899392.

The previous prime is 38720450878937. The next prime is 38720450878951. The reversal of 38720450878938 is 83987805402783.

38720450878938 is a `hidden beast` number, since 3 + 8 + 7 + 2 + 0 + 4 + 508 + 7 + 89 + 38 = 666.

It is not an unprimeable number, because it can be changed into a prime (38720450878931) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136308718 + ... + 136592486.

It is an arithmetic number, because the mean of its divisors is an integer number (1423560582000).

Almost surely, 2^{38720450878938} is an apocalyptic number.

38720450878938 is an abundant number, since it is smaller than the sum of its proper divisors (52387426369062).

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

38720450878938 is a wasteful number, since it uses less digits than its factorization.

38720450878938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432436 (or 432430 counting only the distinct ones).

The product of its (nonzero) digits is 650280960, while the sum is 72.

The spelling of 38720450878938 in words is "thirty-eight trillion, seven hundred twenty billion, four hundred fifty million, eight hundred seventy-eight thousand, nine hundred thirty-eight".