12709440500 has 24 divisors (see below), whose sum is σ = 27757419144. Its totient is φ = 5083776000.

The previous prime is 12709440449. The next prime is 12709440511. The reversal of 12709440500 is 504490721.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3274815076 + 9434625424 = 57226^2 + 97132^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12708941 + ... + 12709940.

It is an arithmetic number, because the mean of its divisors is an integer number (1156559131).

Almost surely, 2^12709440500 is an apocalyptic number.

12709440500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12709440500 is an abundant number, since it is smaller than the sum of its proper divisors (15047978644).

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

12709440500 is a wasteful number, since it uses less digits than its factorization.

12709440500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25418900 (or 25418888 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The spelling of 12709440500 in words is "twelve billion, seven hundred nine million, four hundred forty thousand, five hundred".