12631919720 has 192 divisors, whose sum is σ = 35032564800. Its totient is φ = 4075868160.

The previous prime is 12631919689. The next prime is 12631919743. The reversal of 12631919720 is 2791913621.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6069080 + ... + 6071160.

It is an arithmetic number, because the mean of its divisors is an integer number (182461275).

Almost surely, 2^12631919720 is an apocalyptic number.

12631919720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12631919720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17516282400).

12631919720 is an abundant number, since it is smaller than the sum of its proper divisors (22400645080).

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

12631919720 is a wasteful number, since it uses less digits than its factorization.

12631919720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2288 (or 2277 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 41.

The spelling of 12631919720 in words is "twelve billion, six hundred thirty-one million, nine hundred nineteen thousand, seven hundred twenty".