12631951660 has 48 divisors (see below), whose sum is σ = 29056073760. Its totient is φ = 4591569920.

The previous prime is 12631951571. The next prime is 12631951667. The reversal of 12631951660 is 6615913621.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12631951667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 630706 + ... + 650425.

It is an arithmetic number, because the mean of its divisors is an integer number (605334870).

Almost surely, 2^12631951660 is an apocalyptic number.

12631951660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12631951660 is an abundant number, since it is smaller than the sum of its proper divisors (16424122100).

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

12631951660 is a wasteful number, since it uses less digits than its factorization.

12631951660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281186 (or 1281184 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 40.

The spelling of 12631951660 in words is "twelve billion, six hundred thirty-one million, nine hundred fifty-one thousand, six hundred sixty".