66252324841 has 4 divisors (see below), whose sum is σ = 66283099092. Its totient is φ = 66221550592.

The previous prime is 66252324829. The next prime is 66252324857. The reversal of 66252324841 is 14842325266.

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 1276275625 + 64976049216 = 35725^2 + 254904^2 .

It is a cyclic number.

It is not a de Polignac number, because 66252324841 - 2⁹ = 66252324329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66252324641) 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, 15383896 + ... + 15388201.

It is an arithmetic number, because the mean of its divisors is an integer number (16570774773).

Almost surely, 2^66252324841 is an apocalyptic number.

It is an amenable number.

66252324841 is a deficient number, since it is larger than the sum of its proper divisors (30774251).

66252324841 is a wasteful number, since it uses less digits than its factorization.

66252324841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30774250.

The product of its digits is 552960, while the sum is 43.

The spelling of 66252324841 in words is "sixty-six billion, two hundred fifty-two million, three hundred twenty-four thousand, eight hundred forty-one".