82839390396047 has 4 divisors (see below), whose sum is σ = 82839491320656. Its totient is φ = 82839289471440.

The previous prime is 82839390396043. The next prime is 82839390396107. The reversal of 82839390396047 is 74069309393828.

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 82839390396047 - 2² = 82839390396043 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 (82839390396043) 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, 49220918 + ... + 50876099.

It is an arithmetic number, because the mean of its divisors is an integer number (20709872830164).

Almost surely, 2^{82839390396047} is an apocalyptic number.

82839390396047 is a deficient number, since it is larger than the sum of its proper divisors (100924609).

82839390396047 is a wasteful number, since it uses less digits than its factorization.

82839390396047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100924608.

The product of its (nonzero) digits is 423263232, while the sum is 71.

The spelling of 82839390396047 in words is "eighty-two trillion, eight hundred thirty-nine billion, three hundred ninety million, three hundred ninety-six thousand, forty-seven".