85182257221 has 8 divisors (see below), whose sum is σ = 90210758400. Its totient is φ = 80155731648.

The previous prime is 85182257207. The next prime is 85182257231. The reversal of 85182257221 is 12275228158.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85182257221 - 2¹³ = 85182249029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85182257231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 404661 + ... + 578026.

It is an arithmetic number, because the mean of its divisors is an integer number (11276344800).

Almost surely, 2^85182257221 is an apocalyptic number.

It is an amenable number.

85182257221 is a deficient number, since it is larger than the sum of its proper divisors (5028501179).

85182257221 is a wasteful number, since it uses less digits than its factorization.

85182257221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987803.

The product of its digits is 179200, while the sum is 43.

The spelling of 85182257221 in words is "eighty-five billion, one hundred eighty-two million, two hundred fifty-seven thousand, two hundred twenty-one".