85522164447 has 4 divisors (see below), whose sum is σ = 114029552600. Its totient is φ = 57014776296.

The previous prime is 85522164373. The next prime is 85522164461. The reversal of 85522164447 is 74446122558.

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

It is not a de Polignac number, because 85522164447 - 2¹¹ = 85522162399 is a prime.

It is a super-2 number, since 2×85522164447² (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 = 85522164396 and 85522164405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85522164467) 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, 14253694072 + ... + 14253694077.

It is an arithmetic number, because the mean of its divisors is an integer number (28507388150).

Almost surely, 2^85522164447 is an apocalyptic number.

85522164447 is a deficient number, since it is larger than the sum of its proper divisors (28507388153).

85522164447 is a wasteful number, since it uses less digits than its factorization.

85522164447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28507388152.

The product of its digits is 2150400, while the sum is 48.

The spelling of 85522164447 in words is "eighty-five billion, five hundred twenty-two million, one hundred sixty-four thousand, four hundred forty-seven".