85386311999999 has 4 divisors (see below), whose sum is σ = 85519519975680. Its totient is φ = 85253104024320.

The previous prime is 85386311999993. The next prime is 85386312000019. The reversal of 85386311999999 is 99999911368358.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85386311999999 is a prime.

It is a super-2 number, since 2×85386311999999² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85386311999993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66603986879 + ... + 66603988160.

It is an arithmetic number, because the mean of its divisors is an integer number (21379879993920).

Almost surely, 2^{85386311999999} is an apocalyptic number.

85386311999999 is a deficient number, since it is larger than the sum of its proper divisors (133207975681).

85386311999999 is a wasteful number, since it uses less digits than its factorization.

85386311999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133207975680.

The product of its digits is 9183300480, while the sum is 89.

The spelling of 85386311999999 in words is "eighty-five trillion, three hundred eighty-six billion, three hundred eleven million, nine hundred ninety-nine thousand, nine hundred ninety-nine".