38840860955138 has 128 divisors (see below), whose sum is σ = 69339039897600. Its totient is φ = 16139274117120.

The previous prime is 38840860955137. The next prime is 38840860955147. The reversal of 38840860955138 is 83155906804883.

It is a super-2 number, since 2×38840860955138² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38840860955137) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 217120706 + ... + 217299522.

It is an arithmetic number, because the mean of its divisors is an integer number (541711249200).

Almost surely, 2^{38840860955138} is an apocalyptic number.

38840860955138 is a deficient number, since it is larger than the sum of its proper divisors (30498178942462).

38840860955138 is a wasteful number, since it uses less digits than its factorization.

38840860955138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179112.

The product of its (nonzero) digits is 199065600, while the sum is 68.

The spelling of 38840860955138 in words is "thirty-eight trillion, eight hundred forty billion, eight hundred sixty million, nine hundred fifty-five thousand, one hundred thirty-eight".