6632669707649 has 2 divisors, whose sum is σ = 6632669707650. Its totient is φ = 6632669707648.

The previous prime is 6632669707597. The next prime is 6632669707711. The reversal of 6632669707649 is 9467079662366.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5143642561600 + 1489027146049 = 2267960^2 + 1220257^2 .

It is a cyclic number.

It is not a de Polignac number, because 6632669707649 - 2⁸ = 6632669707393 is a prime.

It is a super-2 number, since 2×6632669707649² (a number of 26 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (6632669704649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3316334853824 + 3316334853825.

It is an arithmetic number, because the mean of its divisors is an integer number (3316334853825).

Almost surely, 2^{6632669707649} is an apocalyptic number.

It is an amenable number.

6632669707649 is a deficient number, since it is larger than the sum of its proper divisors (1).

6632669707649 is an equidigital number, since it uses as much as digits as its factorization.

6632669707649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 740710656, while the sum is 71.

The spelling of 6632669707649 in words is "six trillion, six hundred thirty-two billion, six hundred sixty-nine million, seven hundred seven thousand, six hundred forty-nine".