66737406700666 has 16 divisors (see below), whose sum is σ = 107832501504000. Its totient is φ = 30794473887408.

The previous prime is 66737406700637. The next prime is 66737406700673. The reversal of 66737406700666 is 66600760473766.

It is a junction number, because it is equal to n+sod(n) for n = 66737406700598 and 66737406700607.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308478466 + ... + 308694733.

It is an arithmetic number, because the mean of its divisors is an integer number (6739531344000).

Almost surely, 2^{66737406700666} is an apocalyptic number.

66737406700666 is a deficient number, since it is larger than the sum of its proper divisors (41095094803334).

66737406700666 is a wasteful number, since it uses less digits than its factorization.

66737406700666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617177373.

The product of its (nonzero) digits is 192036096, while the sum is 64.

The spelling of 66737406700666 in words is "sixty-six trillion, seven hundred thirty-seven billion, four hundred six million, seven hundred thousand, six hundred sixty-six".