82380638111605 has 4 divisors (see below), whose sum is σ = 98856765733932. Its totient is φ = 65904510489280.

The previous prime is 82380638111579. The next prime is 82380638111663. The reversal of 82380638111605 is 50611183608328.

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 50471945218321 + 31908692893284 = 7104361^2 + 5648778^2 .

It is not a de Polignac number, because 82380638111605 - 2²³ = 82380629722997 is a prime.

It is a Duffinian number.

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, 8238063811156 + ... + 8238063811165.

It is an arithmetic number, because the mean of its divisors is an integer number (24714191433483).

Almost surely, 2^{82380638111605} is an apocalyptic number.

It is an amenable number.

82380638111605 is a deficient number, since it is larger than the sum of its proper divisors (16476127622327).

82380638111605 is a wasteful number, since it uses less digits than its factorization.

82380638111605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16476127622326.

The product of its (nonzero) digits is 1658880, while the sum is 52.

The spelling of 82380638111605 in words is "eighty-two trillion, three hundred eighty billion, six hundred thirty-eight million, one hundred eleven thousand, six hundred five".