84755116716681 has 16 divisors (see below), whose sum is σ = 113210705747520. Its totient is φ = 56401475021760.

The previous prime is 84755116716649. The next prime is 84755116716701. The reversal of 84755116716681 is 18661761155748.

It is a happy number.

It is not a de Polignac number, because 84755116716681 - 2⁵ = 84755116716649 is a prime.

It is a super-2 number, since 2×84755116716681² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (84755116716181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61440955 + ... + 62805263.

It is an arithmetic number, because the mean of its divisors is an integer number (7075669109220).

Almost surely, 2^{84755116716681} is an apocalyptic number.

It is an amenable number.

84755116716681 is a deficient number, since it is larger than the sum of its proper divisors (28455589030839).

84755116716681 is a wasteful number, since it uses less digits than its factorization.

84755116716681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1401656.

The product of its digits is 67737600, while the sum is 66.

The spelling of 84755116716681 in words is "eighty-four trillion, seven hundred fifty-five billion, one hundred sixteen million, seven hundred sixteen thousand, six hundred eighty-one".