123057324640 has 24 divisors (see below), whose sum is σ = 290722929840. Its totient is φ = 49222929792.

The previous prime is 123057324631. The next prime is 123057324673. The reversal of 123057324640 is 46423750321.

It is a super-2 number, since 2×123057324640² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123057324640.

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, 384553980 + ... + 384554299.

It is an arithmetic number, because the mean of its divisors is an integer number (12113455410).

Almost surely, 2^123057324640 is an apocalyptic number.

123057324640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123057324640 is an abundant number, since it is smaller than the sum of its proper divisors (167665605200).

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

123057324640 is an equidigital number, since it uses as much as digits as its factorization.

123057324640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769108294 (or 769108286 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 37.

The spelling of 123057324640 in words is "one hundred twenty-three billion, fifty-seven million, three hundred twenty-four thousand, six hundred forty".