85224326813 has 4 divisors (see below), whose sum is σ = 86303115840. Its totient is φ = 84145537788.

The previous prime is 85224326791. The next prime is 85224326821. The reversal of 85224326813 is 31862342258.

It is a happy number.

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 85224326813 - 2⁶ = 85224326749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85224320813) 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, 539394395 + ... + 539394552.

It is an arithmetic number, because the mean of its divisors is an integer number (21575778960).

Almost surely, 2^85224326813 is an apocalyptic number.

It is an amenable number.

85224326813 is a deficient number, since it is larger than the sum of its proper divisors (1078789027).

85224326813 is a wasteful number, since it uses less digits than its factorization.

85224326813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078789026.

The product of its digits is 552960, while the sum is 44.

The spelling of 85224326813 in words is "eighty-five billion, two hundred twenty-four million, three hundred twenty-six thousand, eight hundred thirteen".