82615952393 has 4 divisors (see below), whose sum is σ = 88971025668. Its totient is φ = 76260879120.

The previous prime is 82615952357. The next prime is 82615952411. The reversal of 82615952393 is 39325951628.

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

It can be written as a sum of positive squares in 2 ways, for example, as 30706253824 + 51909698569 = 175232^2 + 227837^2 .

It is a cyclic number.

It is not a de Polignac number, because 82615952393 - 2⁶ = 82615952329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82615952333) 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, 3177536618 + ... + 3177536643.

It is an arithmetic number, because the mean of its divisors is an integer number (22242756417).

Almost surely, 2^82615952393 is an apocalyptic number.

It is an amenable number.

82615952393 is a deficient number, since it is larger than the sum of its proper divisors (6355073275).

82615952393 is a wasteful number, since it uses less digits than its factorization.

82615952393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6355073274.

The product of its digits is 3499200, while the sum is 53.

The spelling of 82615952393 in words is "eighty-two billion, six hundred fifteen million, nine hundred fifty-two thousand, three hundred ninety-three".