123756868137 has 16 divisors (see below), whose sum is σ = 191673402752. Its totient is φ = 69558894720.

The previous prime is 123756868031. The next prime is 123756868171. The reversal of 123756868137 is 731868657321.

It is not a de Polignac number, because 123756868137 - 2²⁶ = 123689759273 is a prime.

It is a super-2 number, since 2×123756868137² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123756863137) 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, 48303508 + ... + 48306069.

It is an arithmetic number, because the mean of its divisors is an integer number (11979587672).

Almost surely, 2^123756868137 is an apocalyptic number.

It is an amenable number.

123756868137 is a deficient number, since it is larger than the sum of its proper divisors (67916534615).

123756868137 is an equidigital number, since it uses as much as digits as its factorization.

123756868137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96609648.

The product of its digits is 10160640, while the sum is 57.

The spelling of 123756868137 in words is "one hundred twenty-three billion, seven hundred fifty-six million, eight hundred sixty-eight thousand, one hundred thirty-seven".