123950202992877 has 4 divisors (see below), whose sum is σ = 165266937323840. Its totient is φ = 82633468661916.

The previous prime is 123950202992827. The next prime is 123950202992921. The reversal of 123950202992877 is 778299202059321.

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 123950202992877 - 2³² = 123945908025581 is a prime.

It is a super-2 number, since 2×123950202992877² (a number of 29 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 (123950202992827) 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, 20658367165477 + ... + 20658367165482.

It is an arithmetic number, because the mean of its divisors is an integer number (41316734330960).

Almost surely, 2^{123950202992877} is an apocalyptic number.

It is an amenable number.

123950202992877 is a deficient number, since it is larger than the sum of its proper divisors (41316734330963).

123950202992877 is an equidigital number, since it uses as much as digits as its factorization.

123950202992877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41316734330962.

The product of its (nonzero) digits is 68584320, while the sum is 66.

The spelling of 123950202992877 in words is "one hundred twenty-three trillion, nine hundred fifty billion, two hundred two million, nine hundred ninety-two thousand, eight hundred seventy-seven".