163213161115553 has 4 divisors (see below), whose sum is σ = 163215768542100. Its totient is φ = 163210553689008.

The previous prime is 163213161115531. The next prime is 163213161115559. The reversal of 163213161115553 is 355511161312361.

163213161115553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 54527177599504 + 108685983516049 = 7384252^2 + 10425257^2 .

It is a cyclic number.

It is not a de Polignac number, because 163213161115553 - 2⁶ = 163213161115489 is a prime.

It is a super-2 number, since 2×163213161115553² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163213161115559) 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, 1303619378 + ... + 1303744571.

It is an arithmetic number, because the mean of its divisors is an integer number (40803942135525).

Almost surely, 2^{163213161115553} is an apocalyptic number.

It is an amenable number.

163213161115553 is a deficient number, since it is larger than the sum of its proper divisors (2607426547).

163213161115553 is an equidigital number, since it uses as much as digits as its factorization.

163213161115553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2607426546.

The product of its digits is 243000, while the sum is 44.

The spelling of 163213161115553 in words is "one hundred sixty-three trillion, two hundred thirteen billion, one hundred sixty-one million, one hundred fifteen thousand, five hundred fifty-three".