82646645719 has 4 divisors (see below), whose sum is σ = 90159977160. Its totient is φ = 75133314280.

The previous prime is 82646645713. The next prime is 82646645723. The reversal of 82646645719 is 91754664628.

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 82646645719 - 2³¹ = 80499162071 is a prime.

It is a super-2 number, since 2×82646645719² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82646645713) 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, 3756665704 + ... + 3756665725.

It is an arithmetic number, because the mean of its divisors is an integer number (22539994290).

Almost surely, 2^82646645719 is an apocalyptic number.

82646645719 is a deficient number, since it is larger than the sum of its proper divisors (7513331441).

82646645719 is a wasteful number, since it uses less digits than its factorization.

82646645719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7513331440.

The product of its digits is 17418240, while the sum is 58.

The spelling of 82646645719 in words is "eighty-two billion, six hundred forty-six million, six hundred forty-five thousand, seven hundred nineteen".