82319464881 has 12 divisors (see below), whose sum is σ = 118912476852. Its totient is φ = 54876604896.

The previous prime is 82319464867. The next prime is 82319464891. The reversal of 82319464881 is 18846491328.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 26438760000 + 55880704881 = 162600^2 + 236391^2 .

It is not a de Polignac number, because 82319464881 - 2²² = 82315270577 is a prime.

It is a super-2 number, since 2×82319464881² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82319464891) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75006 + ... + 412631.

It is an arithmetic number, because the mean of its divisors is an integer number (9909373071).

Almost surely, 2^82319464881 is an apocalyptic number.

It is an amenable number.

82319464881 is a deficient number, since it is larger than the sum of its proper divisors (36593011971).

82319464881 is a wasteful number, since it uses less digits than its factorization.

82319464881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506400 (or 506397 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 54.

The spelling of 82319464881 in words is "eighty-two billion, three hundred nineteen million, four hundred sixty-four thousand, eight hundred eighty-one".