66736733673708 has 60 divisors (see below), whose sum is σ = 199386290735632. Its totient is φ = 19067638191840.

The previous prime is 66736733673689. The next prime is 66736733673721. The reversal of 66736733673708 is 80737633763766.

It is a happy number.

66736733673708 is a `hidden beast` number, since 66 + 73 + 6 + 73 + 3 + 67 + 370 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14712681523 + ... + 14712686058.

Almost surely, 2^{66736733673708} is an apocalyptic number.

It is an amenable number.

66736733673708 is an abundant number, since it is smaller than the sum of its proper divisors (132649557061924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66736733673708 is a wasteful number, since it uses less digits than its factorization.

66736733673708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29425367604 (or 29425367593 counting only the distinct ones).

The product of its (nonzero) digits is 2016379008, while the sum is 72.

The spelling of 66736733673708 in words is "sixty-six trillion, seven hundred thirty-six billion, seven hundred thirty-three million, six hundred seventy-three thousand, seven hundred eight".