163322250505261 has 4 divisors (see below), whose sum is σ = 163331171824192. Its totient is φ = 163313329186332.

The previous prime is 163322250505237. The next prime is 163322250505273. The reversal of 163322250505261 is 162505052223361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 163322250505261 - 2⁵ = 163322250505229 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 (163322250505201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4460632005 + ... + 4460668618.

It is an arithmetic number, because the mean of its divisors is an integer number (40832792956048).

Almost surely, 2^{163322250505261} is an apocalyptic number.

It is an amenable number.

163322250505261 is a deficient number, since it is larger than the sum of its proper divisors (8921318931).

163322250505261 is an equidigital number, since it uses as much as digits as its factorization.

163322250505261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8921318930.

The product of its (nonzero) digits is 648000, while the sum is 43.

The spelling of 163322250505261 in words is "one hundred sixty-three trillion, three hundred twenty-two billion, two hundred fifty million, five hundred five thousand, two hundred sixty-one".