13566320463663 has 40 divisors (see below), whose sum is σ = 22231586868480. Its totient is φ = 8176079275920.

The previous prime is 13566320463607. The next prime is 13566320463667. The reversal of 13566320463663 is 36636402366531.

It is a happy number.

13566320463663 is a `hidden beast` number, since 1 + 3 + 566 + 3 + 2 + 0 + 46 + 36 + 6 + 3 = 666.

It is not a de Polignac number, because 13566320463663 - 2¹⁴ = 13566320447279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13566320463667) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 42371095 + ... + 42690072.

It is an arithmetic number, because the mean of its divisors is an integer number (555789671712).

Almost surely, 2^{13566320463663} is an apocalyptic number.

13566320463663 is a deficient number, since it is larger than the sum of its proper divisors (8665266404817).

13566320463663 is a wasteful number, since it uses less digits than its factorization.

13566320463663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85061369 (or 85061360 counting only the distinct ones).

The product of its (nonzero) digits is 25194240, while the sum is 54.

The spelling of 13566320463663 in words is "thirteen trillion, five hundred sixty-six billion, three hundred twenty million, four hundred sixty-three thousand, six hundred sixty-three".