138938932519696 has 15 divisors (see below), whose sum is σ = 269194273108021. Its totient is φ = 69469442685376.

The previous prime is 138938932519679. The next prime is 138938932519727. The reversal of 138938932519696 is 696915239839831.

The square root of 138938932519696 is 11787236.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 119389800846096 + 19549131673600 = 10926564^2 + 4421440^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 45675540 + ... + 48622348.

Almost surely, 2^{138938932519696} is an apocalyptic number.

138938932519696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

138938932519696 is the 11787236-th square number.

It is an amenable number.

138938932519696 is a deficient number, since it is larger than the sum of its proper divisors (130255340588325).

138938932519696 is an frugal number, since it uses more digits than its factorization.

138938932519696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5893626 (or 2946811 counting only the distinct ones).

The product of its digits is 4081466880, while the sum is 82.

The spelling of 138938932519696 in words is "one hundred thirty-eight trillion, nine hundred thirty-eight billion, nine hundred thirty-two million, five hundred nineteen thousand, six hundred ninety-six".