66287275627 has 2 divisors, whose sum is σ = 66287275628. Its totient is φ = 66287275626.

The previous prime is 66287275573. The next prime is 66287275633. The reversal of 66287275627 is 72657278266.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66287275627 - 2²³ = 66278887019 is a prime.

It is not a weakly prime, because it can be changed into another prime (66287275697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33143637813 + 33143637814.

It is an arithmetic number, because the mean of its divisors is an integer number (33143637814).

Almost surely, 2^66287275627 is an apocalyptic number.

66287275627 is a deficient number, since it is larger than the sum of its proper divisors (1).

66287275627 is an equidigital number, since it uses as much as digits as its factorization.

66287275627 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23708160, while the sum is 58.

The spelling of 66287275627 in words is "sixty-six billion, two hundred eighty-seven million, two hundred seventy-five thousand, six hundred twenty-seven".