66733946127 has 12 divisors (see below), whose sum is σ = 98212223304. Its totient is φ = 43649876400.

The previous prime is 66733946119. The next prime is 66733946129. The reversal of 66733946127 is 72164933766.

It is a happy number.

66733946127 is a `hidden beast` number, since 66 + 73 + 39 + 461 + 27 = 666.

It is not a de Polignac number, because 66733946127 - 2³ = 66733946119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66733946129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69951249 + ... + 69952202.

It is an arithmetic number, because the mean of its divisors is an integer number (8184351942).

Almost surely, 2^66733946127 is an apocalyptic number.

66733946127 is a deficient number, since it is larger than the sum of its proper divisors (31478277177).

66733946127 is a wasteful number, since it uses less digits than its factorization.

66733946127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139903510 (or 139903507 counting only the distinct ones).

The product of its digits is 6858432, while the sum is 54.

The spelling of 66733946127 in words is "sixty-six billion, seven hundred thirty-three million, nine hundred forty-six thousand, one hundred twenty-seven".