84517814117 has 4 divisors (see below), whose sum is σ = 92201251776. Its totient is φ = 76834376460.

The previous prime is 84517814081. The next prime is 84517814153. The reversal of 84517814117 is 71141871548.

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 an interprime number because it is at equal distance from previous prime (84517814081) and next prime (84517814153).

It is a cyclic number.

It is not a de Polignac number, because 84517814117 - 2¹² = 84517810021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84517814177) 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, 3841718813 + ... + 3841718834.

It is an arithmetic number, because the mean of its divisors is an integer number (23050312944).

Almost surely, 2^84517814117 is an apocalyptic number.

It is an amenable number.

84517814117 is a deficient number, since it is larger than the sum of its proper divisors (7683437659).

84517814117 is a wasteful number, since it uses less digits than its factorization.

84517814117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7683437658.

The product of its digits is 250880, while the sum is 47.

The spelling of 84517814117 in words is "eighty-four billion, five hundred seventeen million, eight hundred fourteen thousand, one hundred seventeen".