82163730831 has 32 divisors (see below), whose sum is σ = 135133286400. Its totient is φ = 43242522624.

The previous prime is 82163730821. The next prime is 82163730833. The reversal of 82163730831 is 13803736128.

It is not a de Polignac number, because 82163730831 - 2²⁷ = 82029513103 is a prime.

It is a super-2 number, since 2×82163730831² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82163730833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 212575 + ... + 457728.

It is an arithmetic number, because the mean of its divisors is an integer number (4222915200).

Almost surely, 2^82163730831 is an apocalyptic number.

82163730831 is a deficient number, since it is larger than the sum of its proper divisors (52969555569).

82163730831 is a wasteful number, since it uses less digits than its factorization.

82163730831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670775.

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 82163730831 in words is "eighty-two billion, one hundred sixty-three million, seven hundred thirty thousand, eight hundred thirty-one".