66736733667404 has 12 divisors (see below), whose sum is σ = 116794556012904. Its totient is φ = 33366860520864.

The previous prime is 66736733667229. The next prime is 66736733667407. The reversal of 66736733667404 is 40476633763766.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (66736733667407) 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, 376478522 + ... + 376655745.

It is an arithmetic number, because the mean of its divisors is an integer number (9732879667742).

Almost surely, 2^{66736733667404} is an apocalyptic number.

It is an amenable number.

66736733667404 is a deficient number, since it is larger than the sum of its proper divisors (50057822345500).

66736733667404 is a wasteful number, since it uses less digits than its factorization.

66736733667404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753156424 (or 753156422 counting only the distinct ones).

The product of its (nonzero) digits is 1152216576, while the sum is 68.

The spelling of 66736733667404 in words is "sixty-six trillion, seven hundred thirty-six billion, seven hundred thirty-three million, six hundred sixty-seven thousand, four hundred four".