83316307705781 has 8 divisors (see below), whose sum is σ = 85086628637400. Its totient is φ = 81564524166400.

The previous prime is 83316307705777. The next prime is 83316307705801. The reversal of 83316307705781 is 18750770361338.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 44443688892100 + 38872618813681 = 6666610^2 + 6234791^2 .

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 83316307705781 - 2² = 83316307705777 is a prime.

It is a super-2 number, since 2×83316307705781² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83316307705781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83316307765781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4634338976 + ... + 4634356953.

It is an arithmetic number, because the mean of its divisors is an integer number (10635828579675).

Almost surely, 2^{83316307705781} is an apocalyptic number.

It is an amenable number.

83316307705781 is a deficient number, since it is larger than the sum of its proper divisors (1770320931619).

83316307705781 is a wasteful number, since it uses less digits than its factorization.

83316307705781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9268696119.

The product of its (nonzero) digits is 17781120, while the sum is 59.

The spelling of 83316307705781 in words is "eighty-three trillion, three hundred sixteen billion, three hundred seven million, seven hundred five thousand, seven hundred eighty-one".