12641335640563 has 8 divisors (see below), whose sum is σ = 14650722996480. Its totient is φ = 10682818850760.

The previous prime is 12641335640551. The next prime is 12641335640567. The reversal of 12641335640563 is 36504653314621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12641335640563 - 2²¹ = 12641333543411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12641335640567) 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 7 ways as a sum of consecutive naturals, for example, 12717640993 + ... + 12717641986.

It is an arithmetic number, because the mean of its divisors is an integer number (1831340374560).

Almost surely, 2^{12641335640563} is an apocalyptic number.

12641335640563 is a deficient number, since it is larger than the sum of its proper divisors (2009387355917).

12641335640563 is an equidigital number, since it uses as much as digits as its factorization.

12641335640563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25435283057.

The product of its (nonzero) digits is 4665600, while the sum is 49.

The spelling of 12641335640563 in words is "twelve trillion, six hundred forty-one billion, three hundred thirty-five million, six hundred forty thousand, five hundred sixty-three".