138749159700 has 54 divisors (see below), whose sum is σ = 434901535614. Its totient is φ = 36999775680.

The previous prime is 138749159699. The next prime is 138749159713. The reversal of 138749159700 is 7951947831.

It is a happy number.

138749159700 is a `hidden beast` number, since 1 + 3 + 8 + 7 + 49 + 1 + 597 + 0 + 0 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 56972304 + 138692187396 = 7548^2 + 372414^2 .

It is a super-2 number, since 2×138749159700² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 77081967 + ... + 77083766.

It is an arithmetic number, because the mean of its divisors is an integer number (8053732141).

Almost surely, 2^138749159700 is an apocalyptic number.

138749159700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138749159700 is an abundant number, since it is smaller than the sum of its proper divisors (296152375914).

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

138749159700 is a wasteful number, since it uses less digits than its factorization.

138749159700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154165753 (or 154165743 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 54.

The spelling of 138749159700 in words is "one hundred thirty-eight billion, seven hundred forty-nine million, one hundred fifty-nine thousand, seven hundred".