66228482669 has 4 divisors (see below), whose sum is σ = 66229144380. Its totient is φ = 66227820960.

The previous prime is 66228482657. The next prime is 66228482767. The reversal of 66228482669 is 96628482266.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2238709225 + 63989773444 = 47315^2 + 252962^2 .

It is a cyclic number.

It is not a de Polignac number, because 66228482669 - 2¹⁶ = 66228417133 is a prime.

It is a super-2 number, since 2×66228482669² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66228482869) 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, 146474 + ... + 392315.

It is an arithmetic number, because the mean of its divisors is an integer number (16557286095).

Almost surely, 2^66228482669 is an apocalyptic number.

It is an amenable number.

66228482669 is a deficient number, since it is larger than the sum of its proper divisors (661711).

66228482669 is a wasteful number, since it uses less digits than its factorization.

66228482669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661710.

The product of its digits is 23887872, while the sum is 59.

The spelling of 66228482669 in words is "sixty-six billion, two hundred twenty-eight million, four hundred eighty-two thousand, six hundred sixty-nine".