123663065172 has 24 divisors (see below), whose sum is σ = 288554052192. Its totient is φ = 41220036000.

The previous prime is 123663065137. The next prime is 123663065257. The reversal of 123663065172 is 271560366321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 544047 + ... + 737097.

It is an arithmetic number, because the mean of its divisors is an integer number (12023085508).

Almost surely, 2^123663065172 is an apocalyptic number.

123663065172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123663065172 is an abundant number, since it is smaller than the sum of its proper divisors (164890987020).

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

123663065172 is a wasteful number, since it uses less digits than its factorization.

123663065172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246439 (or 246437 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 42.

The spelling of 123663065172 in words is "one hundred twenty-three billion, six hundred sixty-three million, sixty-five thousand, one hundred seventy-two".