137561551128 has 32 divisors (see below), whose sum is σ = 382115420400. Its totient is φ = 45853850304.

The previous prime is 137561551123. The next prime is 137561551129. The reversal of 137561551128 is 821155165731.

137561551128 is a `hidden beast` number, since 1 + 3 + 7 + 5 + 615 + 5 + 1 + 1 + 28 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137561551123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318429301 + ... + 318429732.

Almost surely, 2^137561551128 is an apocalyptic number.

137561551128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

137561551128 is an abundant number, since it is smaller than the sum of its proper divisors (244553869272).

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

137561551128 is a wasteful number, since it uses less digits than its factorization.

137561551128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636859048 (or 636859038 counting only the distinct ones).

The product of its digits is 252000, while the sum is 45.

The spelling of 137561551128 in words is "one hundred thirty-seven billion, five hundred sixty-one million, five hundred fifty-one thousand, one hundred twenty-eight".