84166666851 has 8 divisors (see below), whose sum is σ = 118823529744. Its totient is φ = 52810457600.

The previous prime is 84166666813. The next prime is 84166666873. The reversal of 84166666851 is 15866666148.

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 84166666851 - 2¹³ = 84166658659 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84166666791 and 84166666800.

It is not an unprimeable number, because it can be changed into a prime (84166666351) by changing a digit.

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, 825163350 + ... + 825163451.

It is an arithmetic number, because the mean of its divisors is an integer number (14852941218).

Almost surely, 2^84166666851 is an apocalyptic number.

84166666851 is a deficient number, since it is larger than the sum of its proper divisors (34656862893).

84166666851 is a wasteful number, since it uses less digits than its factorization.

84166666851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650326821.

The product of its digits is 9953280, while the sum is 57.

The spelling of 84166666851 in words is "eighty-four billion, one hundred sixty-six million, six hundred sixty-six thousand, eight hundred fifty-one".