64649146663 has 2 divisors, whose sum is σ = 64649146664. Its totient is φ = 64649146662.

The previous prime is 64649146637. The next prime is 64649146777. The reversal of 64649146663 is 36664194646.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64649146663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64649146613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32324573331 + 32324573332.

It is an arithmetic number, because the mean of its divisors is an integer number (32324573332).

Almost surely, 2^64649146663 is an apocalyptic number.

64649146663 is a deficient number, since it is larger than the sum of its proper divisors (1).

64649146663 is an equidigital number, since it uses as much as digits as its factorization.

64649146663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13436928, while the sum is 55.

The spelling of 64649146663 in words is "sixty-four billion, six hundred forty-nine million, one hundred forty-six thousand, six hundred sixty-three".