138310037063658 has 24 divisors (see below), whose sum is σ = 306980813972196. Its totient is φ = 44978873841600.

The previous prime is 138310037063609. The next prime is 138310037063687. The reversal of 138310037063658 is 856360730013831.

138310037063658 is a `hidden beast` number, since 13 + 83 + 100 + 370 + 6 + 36 + 58 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 126119346102369 + 12190690961289 = 11230287^2 + 3491517^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93705986433 + ... + 93705987908.

Almost surely, 2^{138310037063658} is an apocalyptic number.

138310037063658 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

138310037063658 is an abundant number, since it is smaller than the sum of its proper divisors (168670776908538).

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

138310037063658 is a wasteful number, since it uses less digits than its factorization.

138310037063658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187411974390 (or 187411974387 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The spelling of 138310037063658 in words is "one hundred thirty-eight trillion, three hundred ten billion, thirty-seven million, sixty-three thousand, six hundred fifty-eight".