138878132760 has 48 divisors (see below), whose sum is σ = 451353932640. Its totient is φ = 37034168640.

The previous prime is 138878132749. The next prime is 138878132773. The reversal of 138878132760 is 67231878831.

138878132760 is a `hidden beast` number, since 1 + 388 + 78 + 132 + 7 + 60 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 138878132697 and 138878132706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 192885936 + ... + 192886655.

It is an arithmetic number, because the mean of its divisors is an integer number (9403206930).

Almost surely, 2^138878132760 is an apocalyptic number.

138878132760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138878132760 is an abundant number, since it is smaller than the sum of its proper divisors (312475799880).

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

138878132760 is a wasteful number, since it uses less digits than its factorization.

138878132760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385772608 (or 385772601 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 54.

The spelling of 138878132760 in words is "one hundred thirty-eight billion, eight hundred seventy-eight million, one hundred thirty-two thousand, seven hundred sixty".