83791985123 has 16 divisors (see below), whose sum is σ = 104474886144. Its totient is φ = 65288108160.

The previous prime is 83791985119. The next prime is 83791985141. The reversal of 83791985123 is 32158919738.

It is not a de Polignac number, because 83791985123 - 2² = 83791985119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83791985183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1610411 + ... + 1661627.

It is an arithmetic number, because the mean of its divisors is an integer number (6529680384).

Almost surely, 2^83791985123 is an apocalyptic number.

83791985123 is a deficient number, since it is larger than the sum of its proper divisors (20682901021).

83791985123 is a wasteful number, since it uses less digits than its factorization.

83791985123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72482.

The product of its digits is 3265920, while the sum is 56.

The spelling of 83791985123 in words is "eighty-three billion, seven hundred ninety-one million, nine hundred eighty-five thousand, one hundred twenty-three".