16300634561 has 2 divisors, whose sum is σ = 16300634562. Its totient is φ = 16300634560.

The previous prime is 16300634557. The next prime is 16300634627. The reversal of 16300634561 is 16543600361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8601449536 + 7699185025 = 92744^2 + 87745^2 .

It is an emirp because it is prime and its reverse (16543600361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16300634561 - 2² = 16300634557 is a prime.

It is not a weakly prime, because it can be changed into another prime (16300934561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8150317280 + 8150317281.

It is an arithmetic number, because the mean of its divisors is an integer number (8150317281).

Almost surely, 2^16300634561 is an apocalyptic number.

It is an amenable number.

16300634561 is a deficient number, since it is larger than the sum of its proper divisors (1).

16300634561 is an equidigital number, since it uses as much as digits as its factorization.

16300634561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 35.

The spelling of 16300634561 in words is "sixteen billion, three hundred million, six hundred thirty-four thousand, five hundred sixty-one".