138363152178 has 16 divisors (see below), whose sum is σ = 278116891200. Its totient is φ = 45889286256.

The previous prime is 138363152177. The next prime is 138363152183. The reversal of 138363152178 is 871251363831.

It is a super-2 number, since 2×138363152178² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (138363152177) 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, 57939825 + ... + 57942212.

It is an arithmetic number, because the mean of its divisors is an integer number (17382305700).

Almost surely, 2^138363152178 is an apocalyptic number.

138363152178 is an abundant number, since it is smaller than the sum of its proper divisors (139753739022).

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

138363152178 is a wasteful number, since it uses less digits than its factorization.

138363152178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115882241.

The product of its digits is 725760, while the sum is 48.

The spelling of 138363152178 in words is "one hundred thirty-eight billion, three hundred sixty-three million, one hundred fifty-two thousand, one hundred seventy-eight".