63669730667 has 2 divisors, whose sum is σ = 63669730668. Its totient is φ = 63669730666.

The previous prime is 63669730633. The next prime is 63669730679. The reversal of 63669730667 is 76603796636.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63669730667 is a prime.

It is not a weakly prime, because it can be changed into another prime (63669730367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31834865333 + 31834865334.

It is an arithmetic number, because the mean of its divisors is an integer number (31834865334).

Almost surely, 2^63669730667 is an apocalyptic number.

63669730667 is a deficient number, since it is larger than the sum of its proper divisors (1).

63669730667 is an equidigital number, since it uses as much as digits as its factorization.

63669730667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30862944, while the sum is 59.

The spelling of 63669730667 in words is "sixty-three billion, six hundred sixty-nine million, seven hundred thirty thousand, six hundred sixty-seven".