11738216569 has 2 divisors, whose sum is σ = 11738216570. Its totient is φ = 11738216568.

The previous prime is 11738216563. The next prime is 11738216579. The reversal of 11738216569 is 96561283711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11737555600 + 660969 = 108340^2 + 813^2 .

It is an emirp because it is prime and its reverse (96561283711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11738216569 - 2⁹ = 11738216057 is a prime.

It is a super-2 number, since 2×11738216569² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11738216563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5869108284 + 5869108285.

It is an arithmetic number, because the mean of its divisors is an integer number (5869108285).

Almost surely, 2^11738216569 is an apocalyptic number.

It is an amenable number.

11738216569 is a deficient number, since it is larger than the sum of its proper divisors (1).

11738216569 is an equidigital number, since it uses as much as digits as its factorization.

11738216569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 49.

The spelling of 11738216569 in words is "eleven billion, seven hundred thirty-eight million, two hundred sixteen thousand, five hundred sixty-nine".