12637656650 has 24 divisors (see below), whose sum is σ = 23522973600. Its totient is φ = 5051421360.

The previous prime is 12637656649. The next prime is 12637656667. The reversal of 12637656650 is 5665673621.

It is a junction number, because it is equal to n+sod(n) for n = 12637656595 and 12637656604.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20384 + ... + 160283.

It is an arithmetic number, because the mean of its divisors is an integer number (980123900).

Almost surely, 2^12637656650 is an apocalyptic number.

12637656650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12637656650 is a deficient number, since it is larger than the sum of its proper divisors (10885316950).

12637656650 is a wasteful number, since it uses less digits than its factorization.

12637656650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182078 (or 182073 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 47.

The spelling of 12637656650 in words is "twelve billion, six hundred thirty-seven million, six hundred fifty-six thousand, six hundred fifty".