123744081790 has 96 divisors (see below), whose sum is σ = 269038791360. Its totient is φ = 40137251328.

The previous prime is 123744081779. The next prime is 123744081869. The reversal of 123744081790 is 97180447321.

It is a self number, because there is not a number n which added to its sum of digits gives 123744081790.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20440404 + ... + 20446456.

It is an arithmetic number, because the mean of its divisors is an integer number (2802487410).

Almost surely, 2^123744081790 is an apocalyptic number.

123744081790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123744081790 is an abundant number, since it is smaller than the sum of its proper divisors (145294709570).

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

123744081790 is a wasteful number, since it uses less digits than its factorization.

123744081790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6914 (or 6895 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 46.

The spelling of 123744081790 in words is "one hundred twenty-three billion, seven hundred forty-four million, eighty-one thousand, seven hundred ninety".