123950202992878 has 64 divisors (see below), whose sum is σ = 201921899192640. Its totient is φ = 56864890432512.

The previous prime is 123950202992827. The next prime is 123950202992921. The reversal of 123950202992878 is 878299202059321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 402160200 + ... + 402468292.

It is an arithmetic number, because the mean of its divisors is an integer number (3155029674885).

Almost surely, 2^{123950202992878} is an apocalyptic number.

123950202992878 is a deficient number, since it is larger than the sum of its proper divisors (77971696199762).

123950202992878 is a wasteful number, since it uses less digits than its factorization.

123950202992878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309461.

The product of its (nonzero) digits is 78382080, while the sum is 67.

The spelling of 123950202992878 in words is "one hundred twenty-three trillion, nine hundred fifty billion, two hundred two million, nine hundred ninety-two thousand, eight hundred seventy-eight".