12640000252650 has 48 divisors (see below), whose sum is σ = 32194422279264. Its totient is φ = 3279567631680.

The previous prime is 12640000252631. The next prime is 12640000252699. The reversal of 12640000252650 is 5625200004621.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1138733212 + ... + 1138744311.

It is an arithmetic number, because the mean of its divisors is an integer number (670717130818).

Almost surely, 2^{12640000252650} is an apocalyptic number.

12640000252650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12640000252650 is an abundant number, since it is smaller than the sum of its proper divisors (19554422026614).

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

12640000252650 is a wasteful number, since it uses less digits than its factorization.

12640000252650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2277477575 (or 2277477570 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The spelling of 12640000252650 in words is "twelve trillion, six hundred forty billion, two hundred fifty-two thousand, six hundred fifty".