84117664790 has 16 divisors (see below), whose sum is σ = 151536232512. Its totient is φ = 33619413504.

The previous prime is 84117664781. The next prime is 84117664811. The reversal of 84117664790 is 9746671148.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3443774 + ... + 3468113.

It is an arithmetic number, because the mean of its divisors is an integer number (9471014532).

Almost surely, 2^84117664790 is an apocalyptic number.

84117664790 is a deficient number, since it is larger than the sum of its proper divisors (67418567722).

84117664790 is a wasteful number, since it uses less digits than its factorization.

84117664790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6913111.

The product of its (nonzero) digits is 2032128, while the sum is 53.

The spelling of 84117664790 in words is "eighty-four billion, one hundred seventeen million, six hundred sixty-four thousand, seven hundred ninety".