85852232266421 has 4 divisors (see below), whose sum is σ = 86297062485612. Its totient is φ = 85407402047232.

The previous prime is 85852232266391. The next prime is 85852232266459. The reversal of 85852232266421 is 12466223225858.

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

It can be written as a sum of positive squares in 2 ways, for example, as 24238932123025 + 61613300143396 = 4923305^2 + 7849414^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85852232266421 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 (85852232266121) 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, 222415109306 + ... + 222415109691.

It is an arithmetic number, because the mean of its divisors is an integer number (21574265621403).

Almost surely, 2^{85852232266421} is an apocalyptic number.

It is an amenable number.

85852232266421 is a deficient number, since it is larger than the sum of its proper divisors (444830219191).

85852232266421 is a wasteful number, since it uses less digits than its factorization.

85852232266421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444830219190.

The product of its digits is 22118400, while the sum is 56.

The spelling of 85852232266421 in words is "eighty-five trillion, eight hundred fifty-two billion, two hundred thirty-two million, two hundred sixty-six thousand, four hundred twenty-one".