137877617856 has 56 divisors (see below), whose sum is σ = 397964948544. Its totient is φ = 41781095680.

The previous prime is 137877617791. The next prime is 137877617861. The reversal of 137877617856 is 658716778731.

It is a Harshad number since it is a multiple of its sum of digits (66).

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, 32639370 + ... + 32643593.

Almost surely, 2^137877617856 is an apocalyptic number.

137877617856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

137877617856 is an abundant number, since it is smaller than the sum of its proper divisors (260087330688).

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

137877617856 is a wasteful number, since it uses less digits than its factorization.

137877617856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65282989 (or 65282979 counting only the distinct ones).

The product of its digits is 82978560, while the sum is 66.

The spelling of 137877617856 in words is "one hundred thirty-seven billion, eight hundred seventy-seven million, six hundred seventeen thousand, eight hundred fifty-six".