138701665115 has 16 divisors (see below), whose sum is σ = 179942702688. Its totient is φ = 102027288576.

The previous prime is 138701665111. The next prime is 138701665121. The reversal of 138701665115 is 511566107831.

It is a cyclic number.

It is not a de Polignac number, because 138701665115 - 2² = 138701665111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138701665111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4134797 + ... + 4168206.

It is an arithmetic number, because the mean of its divisors is an integer number (11246418918).

Almost surely, 2^138701665115 is an apocalyptic number.

138701665115 is a deficient number, since it is larger than the sum of its proper divisors (41241037573).

138701665115 is a wasteful number, since it uses less digits than its factorization.

138701665115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8303278.

The product of its (nonzero) digits is 151200, while the sum is 44.

The spelling of 138701665115 in words is "one hundred thirty-eight billion, seven hundred one million, six hundred sixty-five thousand, one hundred fifteen".