138977871180 has 48 divisors (see below), whose sum is σ = 392108580864. Its totient is φ = 36777856960.

The previous prime is 138977871173. The next prime is 138977871199. The reversal of 138977871180 is 81178779831.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8832972 + ... + 8848691.

It is an arithmetic number, because the mean of its divisors is an integer number (8168928768).

Almost surely, 2^138977871180 is an apocalyptic number.

138977871180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138977871180 is an abundant number, since it is smaller than the sum of its proper divisors (253130709684).

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

138977871180 is a wasteful number, since it uses less digits than its factorization.

138977871180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17681806 (or 17681804 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 60.

The spelling of 138977871180 in words is "one hundred thirty-eight billion, nine hundred seventy-seven million, eight hundred seventy-one thousand, one hundred eighty".