83117725817 has 8 divisors (see below), whose sum is σ = 94997889600. Its totient is φ = 71239112784.

The previous prime is 83117725763. The next prime is 83117725819. The reversal of 83117725817 is 71852771138.

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

It is not a de Polignac number, because 83117725817 - 2²² = 83113531513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83117725819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270467 + ... + 489272.

It is an arithmetic number, because the mean of its divisors is an integer number (11874736200).

Almost surely, 2^83117725817 is an apocalyptic number.

It is an amenable number.

83117725817 is a deficient number, since it is larger than the sum of its proper divisors (11880163783).

83117725817 is a wasteful number, since it uses less digits than its factorization.

83117725817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775375.

The product of its digits is 658560, while the sum is 50.

The spelling of 83117725817 in words is "eighty-three billion, one hundred seventeen million, seven hundred twenty-five thousand, eight hundred seventeen".