138927945835 has 32 divisors (see below), whose sum is σ = 191056200192. Its totient is φ = 95002018560.

The previous prime is 138927945817. The next prime is 138927945881. The reversal of 138927945835 is 538549729831.

It is not a de Polignac number, because 138927945835 - 2¹⁵ = 138927913067 is a prime.

It is a Duffinian number.

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, 23839192 + ... + 23845018.

It is an arithmetic number, because the mean of its divisors is an integer number (5970506256).

Almost surely, 2^138927945835 is an apocalyptic number.

138927945835 is a deficient number, since it is larger than the sum of its proper divisors (52128254357).

138927945835 is a wasteful number, since it uses less digits than its factorization.

138927945835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7603.

The product of its digits is 65318400, while the sum is 64.

The spelling of 138927945835 in words is "one hundred thirty-eight billion, nine hundred twenty-seven million, nine hundred forty-five thousand, eight hundred thirty-five".