123672968520 has 64 divisors (see below), whose sum is σ = 371100251520. Its totient is φ = 32972227584.

The previous prime is 123672968513. The next prime is 123672968539. The reversal of 123672968520 is 25869276321.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 448189 + ... + 669491.

It is an arithmetic number, because the mean of its divisors is an integer number (5798441430).

Almost surely, 2^123672968520 is an apocalyptic number.

123672968520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123672968520 is an abundant number, since it is smaller than the sum of its proper divisors (247427283000).

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

123672968520 is a wasteful number, since it uses less digits than its factorization.

123672968520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225974 (or 225970 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 123672968520 in words is "one hundred twenty-three billion, six hundred seventy-two million, nine hundred sixty-eight thousand, five hundred twenty".