163157321105 has 4 divisors (see below), whose sum is σ = 195788785332. Its totient is φ = 130525856880.

The previous prime is 163157321071. The next prime is 163157321161. The reversal of 163157321105 is 501123751361.

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 101906515984 + 61250805121 = 319228^2 + 247489^2 .

It is a de Polignac number, because none of the positive numbers 2^k-163157321105 is a prime.

It is a super-2 number, since 2×163157321105² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16315732106 + ... + 16315732115.

It is an arithmetic number, because the mean of its divisors is an integer number (48947196333).

Almost surely, 2^163157321105 is an apocalyptic number.

It is an amenable number.

163157321105 is a deficient number, since it is larger than the sum of its proper divisors (32631464227).

163157321105 is an equidigital number, since it uses as much as digits as its factorization.

163157321105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32631464226.

The product of its (nonzero) digits is 18900, while the sum is 35.

The spelling of 163157321105 in words is "one hundred sixty-three billion, one hundred fifty-seven million, three hundred twenty-one thousand, one hundred five".