85386916321 has 16 divisors (see below), whose sum is σ = 99601264000. Its totient is φ = 73170642384.

The previous prime is 85386916259. The next prime is 85386916361. The reversal of 85386916321 is 12361968358.

It is not a de Polignac number, because 85386916321 - 2³⁵ = 51027177953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85386916361) 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, 1459591 + ... + 1516963.

It is an arithmetic number, because the mean of its divisors is an integer number (6225079000).

Almost surely, 2^85386916321 is an apocalyptic number.

It is an amenable number.

85386916321 is a deficient number, since it is larger than the sum of its proper divisors (14214347679).

85386916321 is an equidigital number, since it uses as much as digits as its factorization.

85386916321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61733 (or 61719 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 52.

The spelling of 85386916321 in words is "eighty-five billion, three hundred eighty-six million, nine hundred sixteen thousand, three hundred twenty-one".