83891837813 has 8 divisors (see below), whose sum is σ = 101516173632. Its totient is φ = 67677448896.

The previous prime is 83891837773. The next prime is 83891837857. The reversal of 83891837813 is 31873819838.

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

It is a cyclic number.

It is not a de Polignac number, because 83891837813 - 2¹⁶ = 83891772277 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 (83891837413) 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, 352486595 + ... + 352486832.

It is an arithmetic number, because the mean of its divisors is an integer number (12689521704).

Almost surely, 2^83891837813 is an apocalyptic number.

It is an amenable number.

83891837813 is a deficient number, since it is larger than the sum of its proper divisors (17624335819).

83891837813 is a wasteful number, since it uses less digits than its factorization.

83891837813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704973451.

The product of its digits is 6967296, while the sum is 59.

The spelling of 83891837813 in words is "eighty-three billion, eight hundred ninety-one million, eight hundred thirty-seven thousand, eight hundred thirteen".