123361620250566 has 32 divisors (see below), whose sum is σ = 247160185878528. Its totient is φ = 41047776573440.

The previous prime is 123361620250541. The next prime is 123361620250619. The reversal of 123361620250566 is 665052026163321.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 539206 + ... + 15716678.

It is an arithmetic number, because the mean of its divisors is an integer number (7723755808704).

Almost surely, 2^{123361620250566} is an apocalyptic number.

123361620250566 is an abundant number, since it is smaller than the sum of its proper divisors (123798565627962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123361620250566 is a wasteful number, since it uses less digits than its factorization.

123361620250566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15179876.

The product of its (nonzero) digits is 2332800, while the sum is 48.

The spelling of 123361620250566 in words is "one hundred twenty-three trillion, three hundred sixty-one billion, six hundred twenty million, two hundred fifty thousand, five hundred sixty-six".