82693599681 has 64 divisors (see below), whose sum is σ = 145868414976. Its totient is φ = 40342579200.

The previous prime is 82693599589. The next prime is 82693599707. The reversal of 82693599681 is 18699539628.

It is not a de Polignac number, because 82693599681 - 2¹¹ = 82693597633 is a prime.

It is a super-2 number, since 2×82693599681² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (82693599181) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1795461 + ... + 1840941.

It is an arithmetic number, because the mean of its divisors is an integer number (2279193984).

Almost surely, 2^82693599681 is an apocalyptic number.

It is an amenable number.

82693599681 is a deficient number, since it is larger than the sum of its proper divisors (63174815295).

82693599681 is a wasteful number, since it uses less digits than its factorization.

82693599681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45982.

The product of its digits is 50388480, while the sum is 66.

The spelling of 82693599681 in words is "eighty-two billion, six hundred ninety-three million, five hundred ninety-nine thousand, six hundred eighty-one".