123989415696 has 30 divisors (see below), whose sum is σ = 346998156830. Its totient is φ = 41329805184.

The previous prime is 123989415691. The next prime is 123989415713. The reversal of 123989415696 is 696514989321.

123989415696 is a `hidden beast` number, since 1 + 2 + 398 + 9 + 4 + 156 + 96 = 666.

It can be written as a sum of positive squares in only one way, i.e., 86104686096 + 37884729600 = 293436^2 + 194640^2 .

It is not an unprimeable number, because it can be changed into a prime (123989415691) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 430518661 + ... + 430518948.

Almost surely, 2^123989415696 is an apocalyptic number.

123989415696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

123989415696 is an abundant number, since it is smaller than the sum of its proper divisors (223008741134).

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

123989415696 is a wasteful number, since it uses less digits than its factorization.

123989415696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861037623 (or 861037614 counting only the distinct ones).

The product of its digits is 25194240, while the sum is 63.

The spelling of 123989415696 in words is "one hundred twenty-three billion, nine hundred eighty-nine million, four hundred fifteen thousand, six hundred ninety-six".