137877928820 has 24 divisors (see below), whose sum is σ = 289729440000. Its totient is φ = 55115783072.

The previous prime is 137877928819. The next prime is 137877928849. The reversal of 137877928820 is 28829778731.

It is a congruent number.

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, 2179820 + ... + 2242179.

It is an arithmetic number, because the mean of its divisors is an integer number (12072060000).

Almost surely, 2^137877928820 is an apocalyptic number.

137877928820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

137877928820 is an abundant number, since it is smaller than the sum of its proper divisors (151851511180).

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

137877928820 is a wasteful number, since it uses less digits than its factorization.

137877928820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4423567 (or 4423565 counting only the distinct ones).

The product of its (nonzero) digits is 18966528, while the sum is 62.

The spelling of 137877928820 in words is "one hundred thirty-seven billion, eight hundred seventy-seven million, nine hundred twenty-eight thousand, eight hundred twenty".