138145395267 has 24 divisors (see below), whose sum is σ = 225746015040. Its totient is φ = 83724480360.

The previous prime is 138145395253. The next prime is 138145395277. The reversal of 138145395267 is 762593541831.

It is a happy number.

138145395267 is a `hidden beast` number, since 1 + 3 + 81 + 4 + 5 + 39 + 526 + 7 = 666.

It is not a de Polignac number, because 138145395267 - 2²⁴ = 138128618051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138145395277) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25838217 + ... + 25843562.

It is an arithmetic number, because the mean of its divisors is an integer number (9406083960).

Almost surely, 2^138145395267 is an apocalyptic number.

138145395267 is a deficient number, since it is larger than the sum of its proper divisors (87600619773).

138145395267 is an equidigital number, since it uses as much as digits as its factorization.

138145395267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51681805 (or 51681793 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The spelling of 138145395267 in words is "one hundred thirty-eight billion, one hundred forty-five million, three hundred ninety-five thousand, two hundred sixty-seven".