66637226204 has 6 divisors (see below), whose sum is σ = 116615145864. Its totient is φ = 33318613100.

The previous prime is 66637226203. The next prime is 66637226209. The reversal of 66637226204 is 40262273666.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66637226203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8329653272 + ... + 8329653279.

It is an arithmetic number, because the mean of its divisors is an integer number (19435857644).

Almost surely, 2^66637226204 is an apocalyptic number.

It is an amenable number.

66637226204 is a deficient number, since it is larger than the sum of its proper divisors (49977919660).

66637226204 is a wasteful number, since it uses less digits than its factorization.

66637226204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16659306555 (or 16659306553 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 44.

The spelling of 66637226204 in words is "sixty-six billion, six hundred thirty-seven million, two hundred twenty-six thousand, two hundred four".