84359496517 has 4 divisors (see below), whose sum is σ = 84378177036. Its totient is φ = 84340816000.

The previous prime is 84359496503. The next prime is 84359496523. The reversal of 84359496517 is 71569495348.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8352314881 + 76007181636 = 91391^2 + 275694^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84359496517 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 (84359496547) 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, 9333484 + ... + 9342517.

It is an arithmetic number, because the mean of its divisors is an integer number (21094544259).

Almost surely, 2^84359496517 is an apocalyptic number.

It is an amenable number.

84359496517 is a deficient number, since it is larger than the sum of its proper divisors (18680519).

84359496517 is a wasteful number, since it uses less digits than its factorization.

84359496517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18680518.

The product of its digits is 32659200, while the sum is 61.

The spelling of 84359496517 in words is "eighty-four billion, three hundred fifty-nine million, four hundred ninety-six thousand, five hundred seventeen".