83121373860011 has 4 divisors (see below), whose sum is σ = 84055321881000. Its totient is φ = 82187425839024.

The previous prime is 83121373859963. The next prime is 83121373860037. The reversal of 83121373860011 is 11006837312138.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83121373860011 is a prime.

It is a super-3 number, since 3×83121373860011³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83121373860071) 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, 466974010361 + ... + 466974010538.

It is an arithmetic number, because the mean of its divisors is an integer number (21013830470250).

Almost surely, 2^{83121373860011} is an apocalyptic number.

83121373860011 is a deficient number, since it is larger than the sum of its proper divisors (933948020989).

83121373860011 is an equidigital number, since it uses as much as digits as its factorization.

83121373860011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933948020988.

The product of its (nonzero) digits is 145152, while the sum is 44.

The spelling of 83121373860011 in words is "eighty-three trillion, one hundred twenty-one billion, three hundred seventy-three million, eight hundred sixty thousand, eleven".