12607963640 has 32 divisors (see below), whose sum is σ = 30036620880. Its totient is φ = 4746527232.

The previous prime is 12607963639. The next prime is 12607963661. The reversal of 12607963640 is 4636970621.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 12607963591 and 12607963600.

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, 9269882 + ... + 9271241.

Almost surely, 2^12607963640 is an apocalyptic number.

12607963640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12607963640 is an abundant number, since it is smaller than the sum of its proper divisors (17428657240).

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

12607963640 is a wasteful number, since it uses less digits than its factorization.

12607963640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18541151 (or 18541147 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 44.

The spelling of 12607963640 in words is "twelve billion, six hundred seven million, nine hundred sixty-three thousand, six hundred forty".