85948589081 has 4 divisors (see below), whose sum is σ = 85950050100. Its totient is φ = 85947128064.

The previous prime is 85948589059. The next prime is 85948589093. The reversal of 85948589081 is 18098584958.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18098584958 = 2 ⋅9049292479.

It can be written as a sum of positive squares in 2 ways, for example, as 36923544025 + 49025045056 = 192155^2 + 221416^2 .

It is a cyclic number.

It is not a de Polignac number, because 85948589081 - 2²² = 85944394777 is a prime.

It is a super-2 number, since 2×85948589081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 85948588999 and 85948589017.

It is not an unprimeable number, because it can be changed into a prime (85948589011) 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, 638396 + ... + 761213.

It is an arithmetic number, because the mean of its divisors is an integer number (21487512525).

Almost surely, 2^85948589081 is an apocalyptic number.

It is an amenable number.

85948589081 is a deficient number, since it is larger than the sum of its proper divisors (1461019).

85948589081 is a wasteful number, since it uses less digits than its factorization.

85948589081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461018.

The product of its (nonzero) digits is 33177600, while the sum is 65.

The spelling of 85948589081 in words is "eighty-five billion, nine hundred forty-eight million, five hundred eighty-nine thousand, eighty-one".