82039140665 has 16 divisors (see below), whose sum is σ = 103130841600. Its totient is φ = 62566026432.

The previous prime is 82039140647. The next prime is 82039140713. The reversal of 82039140665 is 56604193028.

It is a cyclic number.

It is not a de Polignac number, because 82039140665 - 2²⁸ = 81770705209 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3569477 + ... + 3592386.

It is an arithmetic number, because the mean of its divisors is an integer number (6445677600).

Almost surely, 2^82039140665 is an apocalyptic number.

It is an amenable number.

82039140665 is a deficient number, since it is larger than the sum of its proper divisors (21091700935).

82039140665 is a wasteful number, since it uses less digits than its factorization.

82039140665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7161976.

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 82039140665 in words is "eighty-two billion, thirty-nine million, one hundred forty thousand, six hundred sixty-five".