66376702663 has 2 divisors, whose sum is σ = 66376702664. Its totient is φ = 66376702662.

The previous prime is 66376702661. The next prime is 66376702703. The reversal of 66376702663 is 36620767366.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66376702663 - 2¹ = 66376702661 is a prime.

It is a super-2 number, since 2×66376702663² (a number of 22 digits) contains 22 as substring.

Together with 66376702661, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 66376702663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66376702661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33188351331 + 33188351332.

It is an arithmetic number, because the mean of its divisors is an integer number (33188351332).

Almost surely, 2^66376702663 is an apocalyptic number.

66376702663 is a deficient number, since it is larger than the sum of its proper divisors (1).

66376702663 is an equidigital number, since it uses as much as digits as its factorization.

66376702663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6858432, while the sum is 52.

The spelling of 66376702663 in words is "sixty-six billion, three hundred seventy-six million, seven hundred two thousand, six hundred sixty-three".