85540283281 has 4 divisors (see below), whose sum is σ = 85703840752. Its totient is φ = 85376725812.

The previous prime is 85540283267. The next prime is 85540283317. The reversal of 85540283281 is 18238204558.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85540283281 - 2⁹ = 85540282769 is a prime.

It is a super-2 number, since 2×85540283281² (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 (85540283581) 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, 81777951 + ... + 81778996.

It is an arithmetic number, because the mean of its divisors is an integer number (21425960188).

Almost surely, 2^85540283281 is an apocalyptic number.

It is an amenable number.

85540283281 is a deficient number, since it is larger than the sum of its proper divisors (163557471).

85540283281 is a wasteful number, since it uses less digits than its factorization.

85540283281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163557470.

The product of its (nonzero) digits is 614400, while the sum is 46.

The spelling of 85540283281 in words is "eighty-five billion, five hundred forty million, two hundred eighty-three thousand, two hundred eighty-one".