82646521264 has 40 divisors (see below), whose sum is σ = 163461323520. Its totient is φ = 40468285248.

The previous prime is 82646521261. The next prime is 82646521267. The reversal of 82646521264 is 46212564628.

It is an interprime number because it is at equal distance from previous prime (82646521261) and next prime (82646521267).

It is not an unprimeable number, because it can be changed into a prime (82646521261) 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, 81829 + ... + 414715.

It is an arithmetic number, because the mean of its divisors is an integer number (4086533088).

Almost surely, 2^82646521264 is an apocalyptic number.

It is an amenable number.

82646521264 is a deficient number, since it is larger than the sum of its proper divisors (80814802256).

82646521264 is a wasteful number, since it uses less digits than its factorization.

82646521264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333217 (or 333211 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 46.

The spelling of 82646521264 in words is "eighty-two billion, six hundred forty-six million, five hundred twenty-one thousand, two hundred sixty-four".