85984225081 has 16 divisors (see below), whose sum is σ = 93666815424. Its totient is φ = 78626363904.

The previous prime is 85984225079. The next prime is 85984225109. The reversal of 85984225081 is 18052248958.

It is a cyclic number.

It is not a de Polignac number, because 85984225081 - 2¹ = 85984225079 is a prime.

It is a super-2 number, since 2×85984225081² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85984225031) 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, 433915 + ... + 600208.

It is an arithmetic number, because the mean of its divisors is an integer number (5854175964).

Almost surely, 2^85984225081 is an apocalyptic number.

It is an amenable number.

85984225081 is a deficient number, since it is larger than the sum of its proper divisors (7682590343).

85984225081 is a wasteful number, since it uses less digits than its factorization.

85984225081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034280.

The product of its (nonzero) digits is 1843200, while the sum is 52.

The spelling of 85984225081 in words is "eighty-five billion, nine hundred eighty-four million, two hundred twenty-five thousand, eighty-one".