82608859577 has 6 divisors (see below), whose sum is σ = 87469459038. Its totient is φ = 77748399552.

The previous prime is 82608859573. The next prime is 82608859603. The reversal of 82608859577 is 77595880628.

It can be written as a sum of positive squares in 3 ways, for example, as 1940931136 + 80667928441 = 44056^2 + 284021^2 .

It is not a de Polignac number, because 82608859577 - 2² = 82608859573 is a prime.

It is a super-2 number, since 2×82608859577² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82608859573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1150199 + ... + 1219907.

It is an arithmetic number, because the mean of its divisors is an integer number (14578243173).

Almost surely, 2^82608859577 is an apocalyptic number.

It is an amenable number.

82608859577 is a deficient number, since it is larger than the sum of its proper divisors (4860599461).

82608859577 is an frugal number, since it uses more digits than its factorization.

82608859577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139435 (or 69726 counting only the distinct ones).

The product of its (nonzero) digits is 67737600, while the sum is 65.

The spelling of 82608859577 in words is "eighty-two billion, six hundred eight million, eight hundred fifty-nine thousand, five hundred seventy-seven".