66357566683 has 2 divisors, whose sum is σ = 66357566684. Its totient is φ = 66357566682.

The previous prime is 66357566663. The next prime is 66357566689. The reversal of 66357566683 is 38666575366.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66357566683 - 2⁵ = 66357566651 is a prime.

It is not a weakly prime, because it can be changed into another prime (66357566689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33178783341 + 33178783342.

It is an arithmetic number, because the mean of its divisors is an integer number (33178783342).

Almost surely, 2^66357566683 is an apocalyptic number.

66357566683 is a deficient number, since it is larger than the sum of its proper divisors (1).

66357566683 is an equidigital number, since it uses as much as digits as its factorization.

66357566683 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 97977600, while the sum is 61.

The spelling of 66357566683 in words is "sixty-six billion, three hundred fifty-seven million, five hundred sixty-six thousand, six hundred eighty-three".