85655090321 has 4 divisors (see below), whose sum is σ = 85691526144. Its totient is φ = 85618654500.

The previous prime is 85655090239. The next prime is 85655090329. The reversal of 85655090321 is 12309055658.

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 85655090321 - 2³⁴ = 68475221137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85655090329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18214385 + ... + 18219086.

It is an arithmetic number, because the mean of its divisors is an integer number (21422881536).

Almost surely, 2^85655090321 is an apocalyptic number.

It is an amenable number.

85655090321 is a deficient number, since it is larger than the sum of its proper divisors (36435823).

85655090321 is a wasteful number, since it uses less digits than its factorization.

85655090321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36435822.

The product of its (nonzero) digits is 324000, while the sum is 44.

The spelling of 85655090321 in words is "eighty-five billion, six hundred fifty-five million, ninety thousand, three hundred twenty-one".