123573737940 has 48 divisors (see below), whose sum is σ = 346024754880. Its totient is φ = 32951255040.

The previous prime is 123573737921. The next prime is 123573737951. The reversal of 123573737940 is 49737375321.

It is a happy number.

It is a congruent number.

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, 1420500 + ... + 1504980.

It is an arithmetic number, because the mean of its divisors is an integer number (7208849060).

Almost surely, 2^123573737940 is an apocalyptic number.

123573737940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123573737940 is an abundant number, since it is smaller than the sum of its proper divisors (222451016940).

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

123573737940 is a wasteful number, since it uses less digits than its factorization.

123573737940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108872 (or 108870 counting only the distinct ones).

The product of its (nonzero) digits is 3333960, while the sum is 51.

The spelling of 123573737940 in words is "one hundred twenty-three billion, five hundred seventy-three million, seven hundred thirty-seven thousand, nine hundred forty".