163540363605651 has 8 divisors (see below), whose sum is σ = 242282020156560. Its totient is φ = 109026909070416.

The previous prime is 163540363605643. The next prime is 163540363605683. The reversal of 163540363605651 is 156506363045361.

163540363605651 is a `hidden beast` number, since 1 + 6 + 3 + 5 + 40 + 3 + 6 + 36 + 0 + 565 + 1 = 666.

It is not a de Polignac number, because 163540363605651 - 2³ = 163540363605643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (163540362605651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3028525251930 + ... + 3028525251983.

It is an arithmetic number, because the mean of its divisors is an integer number (30285252519570).

Almost surely, 2^{163540363605651} is an apocalyptic number.

163540363605651 is a deficient number, since it is larger than the sum of its proper divisors (78741656550909).

163540363605651 is an equidigital number, since it uses as much as digits as its factorization.

163540363605651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6057050503922 (or 6057050503916 counting only the distinct ones).

The product of its (nonzero) digits is 17496000, while the sum is 54.

The spelling of 163540363605651 in words is "one hundred sixty-three trillion, five hundred forty billion, three hundred sixty-three million, six hundred five thousand, six hundred fifty-one".