138251301251635 has 32 divisors (see below), whose sum is σ = 194909238171648. Its totient is φ = 92810201819520.

The previous prime is 138251301251617. The next prime is 138251301251641. The reversal of 138251301251635 is 536152103152831.

It is not a de Polignac number, because 138251301251635 - 2²³ = 138251292863027 is a prime.

It is a super-2 number, since 2×138251301251635² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34225434 + ... + 38051056.

It is an arithmetic number, because the mean of its divisors is an integer number (6090913692864).

Almost surely, 2^{138251301251635} is an apocalyptic number.

138251301251635 is a deficient number, since it is larger than the sum of its proper divisors (56657936920013).

138251301251635 is a wasteful number, since it uses less digits than its factorization.

138251301251635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3876195.

The product of its (nonzero) digits is 648000, while the sum is 46.

The spelling of 138251301251635 in words is "one hundred thirty-eight trillion, two hundred fifty-one billion, three hundred one million, two hundred fifty-one thousand, six hundred thirty-five".