85001666851 has 8 divisors (see below), whose sum is σ = 85670384544. Its totient is φ = 84333648960.

The previous prime is 85001666797. The next prime is 85001666923. The reversal of 85001666851 is 15866610058.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85001666851 - 2¹⁹ = 85001142563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85001661851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70281 + ... + 418261.

It is an arithmetic number, because the mean of its divisors is an integer number (10708798068).

Almost surely, 2^85001666851 is an apocalyptic number.

85001666851 is a deficient number, since it is larger than the sum of its proper divisors (668717693).

85001666851 is a wasteful number, since it uses less digits than its factorization.

85001666851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349901.

The product of its (nonzero) digits is 345600, while the sum is 46.

The spelling of 85001666851 in words is "eighty-five billion, one million, six hundred sixty-six thousand, eight hundred fifty-one".