82106510917 has 4 divisors (see below), whose sum is σ = 83145833920. Its totient is φ = 81067187916.

The previous prime is 82106510911. The next prime is 82106510953. The reversal of 82106510917 is 71901560128.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82106510917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82106510917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82106510911) 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, 519661383 + ... + 519661540.

It is an arithmetic number, because the mean of its divisors is an integer number (20786458480).

Almost surely, 2^82106510917 is an apocalyptic number.

It is an amenable number.

82106510917 is a deficient number, since it is larger than the sum of its proper divisors (1039323003).

82106510917 is a wasteful number, since it uses less digits than its factorization.

82106510917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039323002.

The product of its (nonzero) digits is 30240, while the sum is 40.

The spelling of 82106510917 in words is "eighty-two billion, one hundred six million, five hundred ten thousand, nine hundred seventeen".