66149514927 has 12 divisors (see below), whose sum is σ = 95886933064. Its totient is φ = 43943845680.

The previous prime is 66149514917. The next prime is 66149514971. The reversal of 66149514927 is 72941594166.

66149514927 is a `hidden beast` number, since 6 + 6 + 1 + 495 + 149 + 2 + 7 = 666.

It is not a de Polignac number, because 66149514927 - 2⁴ = 66149514911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66149514917) 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, 12983224 + ... + 12988317.

Almost surely, 2^66149514927 is an apocalyptic number.

66149514927 is a deficient number, since it is larger than the sum of its proper divisors (29737418137).

66149514927 is a wasteful number, since it uses less digits than its factorization.

66149514927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25971830 (or 25971827 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The spelling of 66149514927 in words is "sixty-six billion, one hundred forty-nine million, five hundred fourteen thousand, nine hundred twenty-seven".