85644327043 has 4 divisors (see below), whose sum is σ = 93430174968. Its totient is φ = 77858479120.

The previous prime is 85644327019. The next prime is 85644327151. The reversal of 85644327043 is 34072344658.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85644327043 - 2⁵ = 85644327011 is a prime.

It is a super-2 number, since 2×85644327043² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85644326984 and 85644327002.

It is not an unprimeable number, because it can be changed into a prime (85644324043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3892923946 + ... + 3892923967.

It is an arithmetic number, because the mean of its divisors is an integer number (23357543742).

Almost surely, 2^85644327043 is an apocalyptic number.

85644327043 is a deficient number, since it is larger than the sum of its proper divisors (7785847925).

85644327043 is a wasteful number, since it uses less digits than its factorization.

85644327043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7785847924.

The product of its (nonzero) digits is 1935360, while the sum is 46.

The spelling of 85644327043 in words is "eighty-five billion, six hundred forty-four million, three hundred twenty-seven thousand, forty-three".