138729208080 has 40 divisors (see below), whose sum is σ = 430060545792. Its totient is φ = 36994455424.

The previous prime is 138729208021. The next prime is 138729208099. The reversal of 138729208080 is 80802927831.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 289018944 + ... + 289019423.

Almost surely, 2^138729208080 is an apocalyptic number.

138729208080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138729208080 is an abundant number, since it is smaller than the sum of its proper divisors (291331337712).

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

138729208080 is a wasteful number, since it uses less digits than its factorization.

138729208080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578038383 (or 578038377 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 48.

The spelling of 138729208080 in words is "one hundred thirty-eight billion, seven hundred twenty-nine million, two hundred eight thousand, eighty".