82719082639 has 2 divisors, whose sum is σ = 82719082640. Its totient is φ = 82719082638.

The previous prime is 82719082577. The next prime is 82719082661. The reversal of 82719082639 is 93628091728.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82719082639 - 2²⁵ = 82685528207 is a prime.

It is a super-2 number, since 2×82719082639² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 82719082639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82719082139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41359541319 + 41359541320.

It is an arithmetic number, because the mean of its divisors is an integer number (41359541320).

Almost surely, 2^82719082639 is an apocalyptic number.

82719082639 is a deficient number, since it is larger than the sum of its proper divisors (1).

82719082639 is an equidigital number, since it uses as much as digits as its factorization.

82719082639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2612736, while the sum is 55.

The spelling of 82719082639 in words is "eighty-two billion, seven hundred nineteen million, eighty-two thousand, six hundred thirty-nine".