123672299520 has 1152 divisors, whose sum is σ = 512392608000. Its totient is φ = 25433210880.

The previous prime is 123672299519. The next prime is 123672299561. The reversal of 123672299520 is 25992276321.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 123672299520.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1274972112 + ... + 1274972208.

It is an arithmetic number, because the mean of its divisors is an integer number (444785250).

Almost surely, 2^123672299520 is an apocalyptic number.

123672299520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123672299520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256196304000).

123672299520 is an abundant number, since it is smaller than the sum of its proper divisors (388720308480).

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

123672299520 is an equidigital number, since it uses as much as digits as its factorization.

123672299520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 48.

The spelling of 123672299520 in words is "one hundred twenty-three billion, six hundred seventy-two million, two hundred ninety-nine thousand, five hundred twenty".