82640208774013 has 4 divisors (see below), whose sum is σ = 90152955026208. Its totient is φ = 75127462521820.

The previous prime is 82640208774007. The next prime is 82640208774041. The reversal of 82640208774013 is 31047780204628.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82640208774013 - 2²⁹ = 82639671903101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82640208774043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3756373126081 + ... + 3756373126102.

It is an arithmetic number, because the mean of its divisors is an integer number (22538238756552).

Almost surely, 2^{82640208774013} is an apocalyptic number.

It is an amenable number.

82640208774013 is a deficient number, since it is larger than the sum of its proper divisors (7512746252195).

82640208774013 is a wasteful number, since it uses less digits than its factorization.

82640208774013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7512746252194.

The product of its (nonzero) digits is 3612672, while the sum is 52.

The spelling of 82640208774013 in words is "eighty-two trillion, six hundred forty billion, two hundred eight million, seven hundred seventy-four thousand, thirteen".