138077053178 has 16 divisors (see below), whose sum is σ = 208217937960. Its totient is φ = 68671174656.

The previous prime is 138077053129. The next prime is 138077053201. The reversal of 138077053178 is 871350770831.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 135927154489 + 2149898689 = 368683^2 + 46367^2 .

It is a super-2 number, since 2×138077053178² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3297638 + ... + 3339246.

Almost surely, 2^138077053178 is an apocalyptic number.

138077053178 is a deficient number, since it is larger than the sum of its proper divisors (70140884782).

138077053178 is a wasteful number, since it uses less digits than its factorization.

138077053178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50401.

The product of its (nonzero) digits is 987840, while the sum is 50.

The spelling of 138077053178 in words is "one hundred thirty-eight billion, seventy-seven million, fifty-three thousand, one hundred seventy-eight".