16061513609 has 2 divisors, whose sum is σ = 16061513610. Its totient is φ = 16061513608.

The previous prime is 16061513603. The next prime is 16061513627. The reversal of 16061513609 is 90631516061.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11593259584 + 4468254025 = 107672^2 + 66845^2 .

It is an emirp because it is prime and its reverse (90631516061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16061513609 - 2⁴ = 16061513593 is a prime.

It is not a weakly prime, because it can be changed into another prime (16061513603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8030756804 + 8030756805.

It is an arithmetic number, because the mean of its divisors is an integer number (8030756805).

Almost surely, 2^16061513609 is an apocalyptic number.

It is an amenable number.

16061513609 is a deficient number, since it is larger than the sum of its proper divisors (1).

16061513609 is an equidigital number, since it uses as much as digits as its factorization.

16061513609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 38.

The spelling of 16061513609 in words is "sixteen billion, sixty-one million, five hundred thirteen thousand, six hundred nine".