138975310719 has 48 divisors (see below), whose sum is σ = 238069728000. Its totient is φ = 78068353104.

The previous prime is 138975310717. The next prime is 138975310757. The reversal of 138975310719 is 917013579831.

138975310719 is a `hidden beast` number, since 1 + 3 + 8 + 97 + 531 + 0 + 7 + 19 = 666.

It is not a de Polignac number, because 138975310719 - 2¹ = 138975310717 is a prime.

It is a super-2 number, since 2×138975310719² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138975310717) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 199389 + ... + 563654.

It is an arithmetic number, because the mean of its divisors is an integer number (4959786000).

Almost surely, 2^138975310719 is an apocalyptic number.

138975310719 is a deficient number, since it is larger than the sum of its proper divisors (99094417281).

138975310719 is an equidigital number, since it uses as much as digits as its factorization.

138975310719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763129 (or 763112 counting only the distinct ones).

The product of its (nonzero) digits is 1428840, while the sum is 54.

The spelling of 138975310719 in words is "one hundred thirty-eight billion, nine hundred seventy-five million, three hundred ten thousand, seven hundred nineteen".