85680314891 has 8 divisors (see below), whose sum is σ = 90735746400. Its totient is φ = 80626595968.

The previous prime is 85680314879. The next prime is 85680314899. The reversal of 85680314891 is 19841308658.

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 85680314891 - 2¹⁸ = 85680052747 is a prime.

It is a super-2 number, since 2×85680314891² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85680314899) 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, 324416 + ... + 525933.

It is an arithmetic number, because the mean of its divisors is an integer number (11341968300).

Almost surely, 2^85680314891 is an apocalyptic number.

85680314891 is a deficient number, since it is larger than the sum of its proper divisors (5055431509).

85680314891 is a wasteful number, since it uses less digits than its factorization.

85680314891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856293.

The product of its (nonzero) digits is 1658880, while the sum is 53.

Adding to 85680314891 its sum of digits (53), we get a square (85680314944 = 292712²).

The spelling of 85680314891 in words is "eighty-five billion, six hundred eighty million, three hundred fourteen thousand, eight hundred ninety-one".