82780255080305 has 8 divisors (see below), whose sum is σ = 99770089093800. Its totient is φ = 65935015399296.

The previous prime is 82780255080199. The next prime is 82780255080311. The reversal of 82780255080305 is 50308055208728.

It can be written as a sum of positive squares in 4 ways, for example, as 45687757969984 + 37092497110321 = 6759272^2 + 6090361^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82780255080305 - 2¹⁰ = 82780255079281 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36148581860 + ... + 36148584149.

It is an arithmetic number, because the mean of its divisors is an integer number (12471261136725).

Almost surely, 2^{82780255080305} is an apocalyptic number.

It is an amenable number.

82780255080305 is a deficient number, since it is larger than the sum of its proper divisors (16989834013495).

82780255080305 is a wasteful number, since it uses less digits than its factorization.

82780255080305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72297166243.

The product of its (nonzero) digits is 5376000, while the sum is 53.

The spelling of 82780255080305 in words is "eighty-two trillion, seven hundred eighty billion, two hundred fifty-five million, eighty thousand, three hundred five".