163350215261 has 4 divisors (see below), whose sum is σ = 163616692572. Its totient is φ = 163083737952.

The previous prime is 163350215227. The next prime is 163350215293. The reversal of 163350215261 is 162512053361.

163350215261 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 85728912025 + 77621303236 = 292795^2 + 278606^2 .

It is a cyclic number.

It is not a de Polignac number, because 163350215261 - 2²⁶ = 163283106397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163350215201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133237736 + ... + 133238961.

It is an arithmetic number, because the mean of its divisors is an integer number (40904173143).

Almost surely, 2^163350215261 is an apocalyptic number.

It is an amenable number.

163350215261 is a deficient number, since it is larger than the sum of its proper divisors (266477311).

163350215261 is an equidigital number, since it uses as much as digits as its factorization.

163350215261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266477310.

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 163350215261 in words is "one hundred sixty-three billion, three hundred fifty million, two hundred fifteen thousand, two hundred sixty-one".