16304746993 has 2 divisors, whose sum is σ = 16304746994. Its totient is φ = 16304746992.

The previous prime is 16304746979. The next prime is 16304747021. The reversal of 16304746993 is 39964740361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11550230784 + 4754516209 = 107472^2 + 68953^2 .

It is a cyclic number.

It is not a de Polignac number, because 16304746993 - 2⁹ = 16304746481 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16304746993.

It is not a weakly prime, because it can be changed into another prime (16304746793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8152373496 + 8152373497.

It is an arithmetic number, because the mean of its divisors is an integer number (8152373497).

Almost surely, 2^16304746993 is an apocalyptic number.

It is an amenable number.

16304746993 is a deficient number, since it is larger than the sum of its proper divisors (1).

16304746993 is an equidigital number, since it uses as much as digits as its factorization.

16304746993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2939328, while the sum is 52.

The spelling of 16304746993 in words is "sixteen billion, three hundred four million, seven hundred forty-six thousand, nine hundred ninety-three".