83198435817 has 32 divisors (see below), whose sum is σ = 133497011200. Its totient is φ = 45024268608.

The previous prime is 83198435807. The next prime is 83198435843. The reversal of 83198435817 is 71853489138.

It is a happy number.

It is not a de Polignac number, because 83198435817 - 2¹⁴ = 83198419433 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (83198435807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1177434 + ... + 1246092.

It is an arithmetic number, because the mean of its divisors is an integer number (4171781600).

Almost surely, 2^83198435817 is an apocalyptic number.

It is an amenable number.

83198435817 is a deficient number, since it is larger than the sum of its proper divisors (50298575383).

83198435817 is a wasteful number, since it uses less digits than its factorization.

83198435817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71725.

The product of its digits is 5806080, while the sum is 57.

The spelling of 83198435817 in words is "eighty-three billion, one hundred ninety-eight million, four hundred thirty-five thousand, eight hundred seventeen".