163263201205815 has 20 divisors (see below), whose sum is σ = 292664405125224. Its totient is φ = 87073707309552.

The previous prime is 163263201205801. The next prime is 163263201205843. The reversal of 163263201205815 is 518502102362361.

It is a happy number.

163263201205815 is a `hidden beast` number, since 1 + 6 + 3 + 2 + 63 + 2 + 0 + 1 + 2 + 0 + 581 + 5 = 666.

It is not a de Polignac number, because 163263201205815 - 2²⁸ = 163262932770359 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 201559507257 + ... + 201559508066.

Almost surely, 2^{163263201205815} is an apocalyptic number.

163263201205815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

163263201205815 is a deficient number, since it is larger than the sum of its proper divisors (129401203919409).

163263201205815 is an equidigital number, since it uses as much as digits as its factorization.

163263201205815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403119015340 (or 403119015331 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 163263201205815 in words is "one hundred sixty-three trillion, two hundred sixty-three billion, two hundred one million, two hundred five thousand, eight hundred fifteen".