82144338331 has 4 divisors (see below), whose sum is σ = 89612005464. Its totient is φ = 74676671200.

The previous prime is 82144338323. The next prime is 82144338343. The reversal of 82144338331 is 13383344128.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82144338331 - 2³ = 82144338323 is a prime.

It is a super-2 number, since 2×82144338331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82144338371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3733833550 + ... + 3733833571.

It is an arithmetic number, because the mean of its divisors is an integer number (22403001366).

Almost surely, 2^82144338331 is an apocalyptic number.

82144338331 is a deficient number, since it is larger than the sum of its proper divisors (7467667133).

82144338331 is a wasteful number, since it uses less digits than its factorization.

82144338331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7467667132.

The product of its digits is 165888, while the sum is 40.

The spelling of 82144338331 in words is "eighty-two billion, one hundred forty-four million, three hundred thirty-eight thousand, three hundred thirty-one".