138885627719 has 32 divisors (see below), whose sum is σ = 156206776320. Its totient is φ = 122804352000.

The previous prime is 138885627703. The next prime is 138885627757. The reversal of 138885627719 is 917726588831.

It is a cyclic number.

It is not a de Polignac number, because 138885627719 - 2⁴ = 138885627703 is a prime.

It is a super-2 number, since 2×138885627719² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138885627919) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5241434 + ... + 5267864.

It is an arithmetic number, because the mean of its divisors is an integer number (4881461760).

Almost surely, 2^138885627719 is an apocalyptic number.

138885627719 is a deficient number, since it is larger than the sum of its proper divisors (17321148601).

138885627719 is a wasteful number, since it uses less digits than its factorization.

138885627719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26711.

The product of its digits is 40642560, while the sum is 65.

The spelling of 138885627719 in words is "one hundred thirty-eight billion, eight hundred eighty-five million, six hundred twenty-seven thousand, seven hundred nineteen".