163256273971 has 8 divisors (see below), whose sum is σ = 186949534464. Its totient is φ = 139655747400.

The previous prime is 163256273951. The next prime is 163256273977. The reversal of 163256273971 is 179372652361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 163256273971 - 2²³ = 163247885363 is a prime.

It is a super-2 number, since 2×163256273971² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (163256273977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23179705 + ... + 23186746.

It is an arithmetic number, because the mean of its divisors is an integer number (23368691808).

Almost surely, 2^163256273971 is an apocalyptic number.

163256273971 is a deficient number, since it is larger than the sum of its proper divisors (23693260493).

163256273971 is an equidigital number, since it uses as much as digits as its factorization.

163256273971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46366961.

The product of its digits is 2857680, while the sum is 52.

The spelling of 163256273971 in words is "one hundred sixty-three billion, two hundred fifty-six million, two hundred seventy-three thousand, nine hundred seventy-one".