66453634204 has 24 divisors (see below), whose sum is σ = 116518157280. Its totient is φ = 33162775104.

The previous prime is 66453634153. The next prime is 66453634207. The reversal of 66453634204 is 40243635466.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66453634207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12804042 + ... + 12809230.

It is an arithmetic number, because the mean of its divisors is an integer number (4854923220).

Almost surely, 2^66453634204 is an apocalyptic number.

It is an amenable number.

66453634204 is a deficient number, since it is larger than the sum of its proper divisors (50064523076).

66453634204 is a wasteful number, since it uses less digits than its factorization.

66453634204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10749 (or 10747 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 43.

The spelling of 66453634204 in words is "sixty-six billion, four hundred fifty-three million, six hundred thirty-four thousand, two hundred four".