85867844236881 has 16 divisors (see below), whose sum is σ = 138543076416384. Its totient is φ = 46181025471744.

The previous prime is 85867844236879. The next prime is 85867844236901. The reversal of 85867844236881 is 18863244876858.

It is not a de Polignac number, because 85867844236881 - 2¹ = 85867844236879 is a prime.

It is a super-2 number, since 2×85867844236881² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 85867844236797 and 85867844236806.

It is not an unprimeable number, because it can be changed into a prime (85867844236831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120263086810 + ... + 120263087523.

It is an arithmetic number, because the mean of its divisors is an integer number (8658942276024).

Almost surely, 2^{85867844236881} is an apocalyptic number.

It is an amenable number.

85867844236881 is a deficient number, since it is larger than the sum of its proper divisors (52675232179503).

85867844236881 is a wasteful number, since it uses less digits than its factorization.

85867844236881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240526174360.

The product of its digits is 3963617280, while the sum is 78.

The spelling of 85867844236881 in words is "eighty-five trillion, eight hundred sixty-seven billion, eight hundred forty-four million, two hundred thirty-six thousand, eight hundred eighty-one".