16344640363 has 2 divisors, whose sum is σ = 16344640364. Its totient is φ = 16344640362.

The previous prime is 16344640349. The next prime is 16344640393. The reversal of 16344640363 is 36304644361.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16344640363 - 2⁵ = 16344640331 is a prime.

It is not a weakly prime, because it can be changed into another prime (16344640393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8172320181 + 8172320182.

It is an arithmetic number, because the mean of its divisors is an integer number (8172320182).

Almost surely, 2^16344640363 is an apocalyptic number.

16344640363 is a deficient number, since it is larger than the sum of its proper divisors (1).

16344640363 is an equidigital number, since it uses as much as digits as its factorization.

16344640363 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 40.

The spelling of 16344640363 in words is "sixteen billion, three hundred forty-four million, six hundred forty thousand, three hundred sixty-three".