12402663781563 has 96 divisors (see below), whose sum is σ = 21797342611200. Its totient is φ = 6697636761600.

The previous prime is 12402663781537. The next prime is 12402663781567. The reversal of 12402663781563 is 36518736620421.

12402663781563 is a `hidden beast` number, since 1 + 2 + 4 + 0 + 2 + 6 + 6 + 3 + 78 + 1 + 563 = 666.

It is not a de Polignac number, because 12402663781563 - 2²¹ = 12402661684411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12402663781567) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 46521523 + ... + 46787363.

It is an arithmetic number, because the mean of its divisors is an integer number (227055652200).

Almost surely, 2^{12402663781563} is an apocalyptic number.

12402663781563 is a deficient number, since it is larger than the sum of its proper divisors (9394678829637).

12402663781563 is a wasteful number, since it uses less digits than its factorization.

12402663781563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267353 (or 267350 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 12402663781563 in words is "twelve trillion, four hundred two billion, six hundred sixty-three million, seven hundred eighty-one thousand, five hundred sixty-three".