85664317272004 has 9 divisors (see below), whose sum is σ = 149912587620271. Its totient is φ = 42832149380500.

The previous prime is 85664317271983. The next prime is 85664317272007. The reversal of 85664317272004 is 40027271346658.

The square root of 85664317272004 is 9255502.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85664317272007) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 16197129 + ... + 20824879.

Almost surely, 2^{85664317272004} is an apocalyptic number.

85664317272004 is the 9255502-nd square number.

It is an amenable number.

85664317272004 is a deficient number, since it is larger than the sum of its proper divisors (64248270348267).

85664317272004 is an frugal number, since it uses more digits than its factorization.

85664317272004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9255506 (or 4627753 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 55.

The spelling of 85664317272004 in words is "eighty-five trillion, six hundred sixty-four billion, three hundred seventeen million, two hundred seventy-two thousand, four".