151115775138 has 12 divisors (see below), whose sum is σ = 327417512838. Its totient is φ = 50371925040.

The previous prime is 151115775137. The next prime is 151115775149. The reversal of 151115775138 is 831577511151.

151115775138 is a `hidden beast` number, since 1 + 51 + 1 + 15 + 77 + 513 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 89548767009 + 61567008129 = 299247^2 + 248127^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 151115775093 and 151115775102.

It is not an unprimeable number, because it can be changed into a prime (151115775137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4197660403 + ... + 4197660438.

Almost surely, 2^151115775138 is an apocalyptic number.

151115775138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

151115775138 is an abundant number, since it is smaller than the sum of its proper divisors (176301737700).

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

151115775138 is a wasteful number, since it uses less digits than its factorization.

151115775138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8395320849 (or 8395320846 counting only the distinct ones).

The product of its digits is 147000, while the sum is 45.

The spelling of 151115775138 in words is "one hundred fifty-one billion, one hundred fifteen million, seven hundred seventy-five thousand, one hundred thirty-eight".