138764720127 has 16 divisors (see below), whose sum is σ = 201861210240. Its totient is φ = 84090823200.

The previous prime is 138764720119. The next prime is 138764720141. The reversal of 138764720127 is 721027467831.

It is not a de Polignac number, because 138764720127 - 2³ = 138764720119 is a prime.

It is a super-2 number, since 2×138764720127² (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 (138764720147) 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, 94377 + ... + 535197.

It is an arithmetic number, because the mean of its divisors is an integer number (12616325640).

Almost surely, 2^138764720127 is an apocalyptic number.

138764720127 is a deficient number, since it is larger than the sum of its proper divisors (63096490113).

138764720127 is a wasteful number, since it uses less digits than its factorization.

138764720127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450374.

The product of its (nonzero) digits is 790272, while the sum is 48.

The spelling of 138764720127 in words is "one hundred thirty-eight billion, seven hundred sixty-four million, seven hundred twenty thousand, one hundred twenty-seven".