123474604640 has 24 divisors (see below), whose sum is σ = 291708753840. Its totient is φ = 49389841792.

The previous prime is 123474604639. The next prime is 123474604661. The reversal of 123474604640 is 46406474321.

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, 385857980 + ... + 385858299.

It is an arithmetic number, because the mean of its divisors is an integer number (12154531410).

Almost surely, 2^123474604640 is an apocalyptic number.

123474604640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123474604640 is an abundant number, since it is smaller than the sum of its proper divisors (168234149200).

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

123474604640 is an equidigital number, since it uses as much as digits as its factorization.

123474604640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771716294 (or 771716286 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 41.

The spelling of 123474604640 in words is "one hundred twenty-three billion, four hundred seventy-four million, six hundred four thousand, six hundred forty".