123507746157 has 4 divisors (see below), whose sum is σ = 164676994880. Its totient is φ = 82338497436.

The previous prime is 123507746099. The next prime is 123507746179. The reversal of 123507746157 is 751647705321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 123507746157 - 2⁷ = 123507746029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123507746057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20584624357 + ... + 20584624362.

It is an arithmetic number, because the mean of its divisors is an integer number (41169248720).

Almost surely, 2^123507746157 is an apocalyptic number.

It is an amenable number.

123507746157 is a deficient number, since it is larger than the sum of its proper divisors (41169248723).

123507746157 is an equidigital number, since it uses as much as digits as its factorization.

123507746157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41169248722.

The product of its (nonzero) digits is 1234800, while the sum is 48.

The spelling of 123507746157 in words is "one hundred twenty-three billion, five hundred seven million, seven hundred forty-six thousand, one hundred fifty-seven".