82717998731 has 8 divisors (see below), whose sum is σ = 83227280400. Its totient is φ = 82209549312.

The previous prime is 82717998679. The next prime is 82717998773. The reversal of 82717998731 is 13789971728.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82717998731 - 2⁶ = 82717998667 is a prime.

It is a super-2 number, since 2×82717998731² (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 (82717998791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8081 + ... + 406818.

It is an arithmetic number, because the mean of its divisors is an integer number (10403410050).

Almost surely, 2^82717998731 is an apocalyptic number.

82717998731 is a deficient number, since it is larger than the sum of its proper divisors (509281669).

82717998731 is a wasteful number, since it uses less digits than its factorization.

82717998731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416125.

The product of its digits is 10668672, while the sum is 62.

The spelling of 82717998731 in words is "eighty-two billion, seven hundred seventeen million, nine hundred ninety-eight thousand, seven hundred thirty-one".