66469224481 has 4 divisors (see below), whose sum is σ = 72511881264. Its totient is φ = 60426567700.

The previous prime is 66469224473. The next prime is 66469224527. The reversal of 66469224481 is 18442296466.

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 66469224481 - 2³ = 66469224473 is a prime.

It is a super-2 number, since 2×66469224481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66469224181) 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, 3021328375 + ... + 3021328396.

It is an arithmetic number, because the mean of its divisors is an integer number (18127970316).

Almost surely, 2^66469224481 is an apocalyptic number.

It is an amenable number.

66469224481 is a deficient number, since it is larger than the sum of its proper divisors (6042656783).

66469224481 is a wasteful number, since it uses less digits than its factorization.

66469224481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6042656782.

The product of its digits is 3981312, while the sum is 52.

The spelling of 66469224481 in words is "sixty-six billion, four hundred sixty-nine million, two hundred twenty-four thousand, four hundred eighty-one".