123409984768 has 36 divisors (see below), whose sum is σ = 281529031840. Its totient is φ = 52889992704.

The previous prime is 123409984727. The next prime is 123409984777. The reversal of 123409984768 is 867489904321.

It is a hoax number, since the sum of its digits (61) coincides with the sum of the digits of its distinct 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, 34431798 + ... + 34435381.

Almost surely, 2^123409984768 is an apocalyptic number.

It is an amenable number.

123409984768 is an abundant number, since it is smaller than the sum of its proper divisors (158119047072).

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

123409984768 is an frugal number, since it uses more digits than its factorization.

123409984768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68867202 (or 68867188 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 61.

The spelling of 123409984768 in words is "one hundred twenty-three billion, four hundred nine million, nine hundred eighty-four thousand, seven hundred sixty-eight".