9465638365649 has 2 divisors, whose sum is σ = 9465638365650. Its totient is φ = 9465638365648.

The previous prime is 9465638365619. The next prime is 9465638365681.

9465638365649 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5727080769424 + 3738557596225 = 2393132^2 + 1933535^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 9465638365649 - 2²⁴ = 9465621588433 is a prime.

It is not a weakly prime, because it can be changed into another prime (9465638365609) 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, 4732819182824 + 4732819182825.

It is an arithmetic number, because the mean of its divisors is an integer number (4732819182825).

Almost surely, 2^{9465638365649} is an apocalyptic number.

It is an amenable number.

9465638365649 is a deficient number, since it is larger than the sum of its proper divisors (1).

9465638365649 is an equidigital number, since it uses as much as digits as its factorization.

9465638365649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3023308800, while the sum is 74.

The spelling of 9465638365649 in words is "nine trillion, four hundred sixty-five billion, six hundred thirty-eight million, three hundred sixty-five thousand, six hundred forty-nine".