163264630553 has 4 divisors (see below), whose sum is σ = 163292511540. Its totient is φ = 163236749568.

The previous prime is 163264630511. The next prime is 163264630579. The reversal of 163264630553 is 355036462361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 92108001049 + 71156629504 = 303493^2 + 266752^2 .

It is a cyclic number.

It is not a de Polignac number, because 163264630553 - 2⁶ = 163264630489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163264630153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13931708 + ... + 13943421.

It is an arithmetic number, because the mean of its divisors is an integer number (40823127885).

Almost surely, 2^163264630553 is an apocalyptic number.

It is an amenable number.

163264630553 is a deficient number, since it is larger than the sum of its proper divisors (27880987).

163264630553 is an equidigital number, since it uses as much as digits as its factorization.

163264630553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27880986.

The product of its (nonzero) digits is 1166400, while the sum is 44.

The spelling of 163264630553 in words is "one hundred sixty-three billion, two hundred sixty-four million, six hundred thirty thousand, five hundred fifty-three".