66307964927 has 2 divisors, whose sum is σ = 66307964928. Its totient is φ = 66307964926.

The previous prime is 66307964911. The next prime is 66307964969. The reversal of 66307964927 is 72946970366.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66307964927 - 2⁴ = 66307964911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66307964027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33153982463 + 33153982464.

It is an arithmetic number, because the mean of its divisors is an integer number (33153982464).

Almost surely, 2^66307964927 is an apocalyptic number.

66307964927 is a deficient number, since it is larger than the sum of its proper divisors (1).

66307964927 is an equidigital number, since it uses as much as digits as its factorization.

66307964927 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20575296, while the sum is 59.

The spelling of 66307964927 in words is "sixty-six billion, three hundred seven million, nine hundred sixty-four thousand, nine hundred twenty-seven".