123915873730 has 32 divisors (see below), whose sum is σ = 245336698368. Its totient is φ = 45060312880.

The previous prime is 123915873673. The next prime is 123915873743. The reversal of 123915873730 is 37378519321.

It is a happy number.

It is a super-2 number, since 2×123915873730² (a number of 23 digits) contains 22 as substring.

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, 4641682 + ... + 4668301.

It is an arithmetic number, because the mean of its divisors is an integer number (7666771824).

Almost surely, 2^123915873730 is an apocalyptic number.

123915873730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123915873730 is a deficient number, since it is larger than the sum of its proper divisors (121420824638).

123915873730 is an equidigital number, since it uses as much as digits as its factorization.

123915873730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9310023 (or 9310001 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 49.

The spelling of 123915873730 in words is "one hundred twenty-three billion, nine hundred fifteen million, eight hundred seventy-three thousand, seven hundred thirty".