123606215664 has 40 divisors (see below), whose sum is σ = 319329063120. Its totient is φ = 41200393728.

The previous prime is 123606215657. The next prime is 123606215669. The reversal of 123606215664 is 466512606321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123606215669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1849194 + ... + 1914870.

It is an arithmetic number, because the mean of its divisors is an integer number (7983226578).

Almost surely, 2^123606215664 is an apocalyptic number.

It is an amenable number.

123606215664 is an abundant number, since it is smaller than the sum of its proper divisors (195722847456).

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

123606215664 is a wasteful number, since it uses less digits than its factorization.

123606215664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104897 (or 104891 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 123606215664 in words is "one hundred twenty-three billion, six hundred six million, two hundred fifteen thousand, six hundred sixty-four".