82719384245 has 4 divisors (see below), whose sum is σ = 99263261100. Its totient is φ = 66175507392.

The previous prime is 82719384203. The next prime is 82719384259. The reversal of 82719384245 is 54248391728.

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 15564808081 + 67154576164 = 124759^2 + 259142^2 .

It is a cyclic number.

It is not a de Polignac number, because 82719384245 - 2¹⁰ = 82719383221 is a prime.

It is a super-4 number, since 4×82719384245⁴ (a number of 45 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8271938420 + ... + 8271938429.

It is an arithmetic number, because the mean of its divisors is an integer number (24815815275).

Almost surely, 2^82719384245 is an apocalyptic number.

It is an amenable number.

82719384245 is a deficient number, since it is larger than the sum of its proper divisors (16543876855).

82719384245 is a wasteful number, since it uses less digits than its factorization.

82719384245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16543876854.

The product of its digits is 3870720, while the sum is 53.

The spelling of 82719384245 in words is "eighty-two billion, seven hundred nineteen million, three hundred eighty-four thousand, two hundred forty-five".