38720899131 has 8 divisors (see below), whose sum is σ = 52249888320. Its totient is φ = 25502921352.

The previous prime is 38720899123. The next prime is 38720899141. The reversal of 38720899131 is 13199802783.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 38720899131 - 2³ = 38720899123 is a prime.

It is a super-2 number, since 2×38720899131² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (38720899141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77752561 + ... + 77753058.

It is an arithmetic number, because the mean of its divisors is an integer number (6531236040).

Almost surely, 2^38720899131 is an apocalyptic number.

38720899131 is a deficient number, since it is larger than the sum of its proper divisors (13528989189).

38720899131 is a wasteful number, since it uses less digits than its factorization.

38720899131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155505705.

The product of its (nonzero) digits is 653184, while the sum is 51.

The spelling of 38720899131 in words is "thirty-eight billion, seven hundred twenty million, eight hundred ninety-nine thousand, one hundred thirty-one".