85891844819858 has 96 divisors (see below), whose sum is σ = 171023004616320. Its totient is φ = 31931116842240.

The previous prime is 85891844819831. The next prime is 85891844819863.

85891844819858 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×85891844819858² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 85891844819858.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5905760 + ... + 14375732.

It is an arithmetic number, because the mean of its divisors is an integer number (1781489631420).

Almost surely, 2^{85891844819858} is an apocalyptic number.

85891844819858 is a deficient number, since it is larger than the sum of its proper divisors (85131159796462).

85891844819858 is a wasteful number, since it uses less digits than its factorization.

85891844819858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8470432 (or 8470425 counting only the distinct ones).

The product of its digits is 8493465600, while the sum is 86.

The spelling of 85891844819858 in words is "eighty-five trillion, eight hundred ninety-one billion, eight hundred forty-four million, eight hundred nineteen thousand, eight hundred fifty-eight".