12651621406362 has 128 divisors (see below), whose sum is σ = 28344075724800. Its totient is φ = 4182973135488.

The previous prime is 12651621406349. The next prime is 12651621406363. The reversal of 12651621406362 is 26360412615621.

12651621406362 is a `hidden beast` number, since 1 + 2 + 6 + 5 + 1 + 6 + 2 + 1 + 4 + 0 + 636 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (12651621406363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5128341453 + ... + 5128343919.

It is an arithmetic number, because the mean of its divisors is an integer number (221438091600).

Almost surely, 2^{12651621406362} is an apocalyptic number.

12651621406362 is an abundant number, since it is smaller than the sum of its proper divisors (15692454318438).

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

12651621406362 is a wasteful number, since it uses less digits than its factorization.

12651621406362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4097 (or 4091 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 12651621406362 in words is "twelve trillion, six hundred fifty-one billion, six hundred twenty-one million, four hundred six thousand, three hundred sixty-two".