82790225599 has 4 divisors (see below), whose sum is σ = 82967507064. Its totient is φ = 82612944136.

The previous prime is 82790225579. The next prime is 82790225611. The reversal of 82790225599 is 99552209728.

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 82790225599 - 2¹⁹ = 82789701311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82790225579) 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, 88640032 + ... + 88640965.

It is an arithmetic number, because the mean of its divisors is an integer number (20741876766).

Almost surely, 2^82790225599 is an apocalyptic number.

82790225599 is a deficient number, since it is larger than the sum of its proper divisors (177281465).

82790225599 is a wasteful number, since it uses less digits than its factorization.

82790225599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177281464.

The product of its (nonzero) digits is 8164800, while the sum is 58.

The spelling of 82790225599 in words is "eighty-two billion, seven hundred ninety million, two hundred twenty-five thousand, five hundred ninety-nine".