123980815568 has 20 divisors (see below), whose sum is σ = 240248789760. Its totient is φ = 61981127904.

The previous prime is 123980815529. The next prime is 123980815603. The reversal of 123980815568 is 865518089321.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 469130 + ... + 684137.

It is an arithmetic number, because the mean of its divisors is an integer number (12012439488).

Almost surely, 2^123980815568 is an apocalyptic number.

It is an amenable number.

123980815568 is a deficient number, since it is larger than the sum of its proper divisors (116267974192).

123980815568 is a wasteful number, since it uses less digits than its factorization.

123980815568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1159994 (or 1159988 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 56.

The spelling of 123980815568 in words is "one hundred twenty-three billion, nine hundred eighty million, eight hundred fifteen thousand, five hundred sixty-eight".