13772216009 has 2 divisors, whose sum is σ = 13772216010. Its totient is φ = 13772216008.

The previous prime is 13772215991. The next prime is 13772216057. The reversal of 13772216009 is 90061227731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10768627984 + 3003588025 = 103772^2 + 54805^2 .

It is an emirp because it is prime and its reverse (90061227731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13772216009 - 2¹² = 13772211913 is a prime.

It is not a weakly prime, because it can be changed into another prime (13772216309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6886108004 + 6886108005.

It is an arithmetic number, because the mean of its divisors is an integer number (6886108005).

Almost surely, 2^13772216009 is an apocalyptic number.

It is an amenable number.

13772216009 is a deficient number, since it is larger than the sum of its proper divisors (1).

13772216009 is an equidigital number, since it uses as much as digits as its factorization.

13772216009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 38.

The spelling of 13772216009 in words is "thirteen billion, seven hundred seventy-two million, two hundred sixteen thousand, nine".