11215411709 has 2 divisors, whose sum is σ = 11215411710. Its totient is φ = 11215411708.

The previous prime is 11215411699. The next prime is 11215411729. The reversal of 11215411709 is 90711451211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6195264100 + 5020147609 = 78710^2 + 70853^2 .

It is an emirp because it is prime and its reverse (90711451211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11215411709 - 2¹⁶ = 11215346173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11215411729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5607705854 + 5607705855.

It is an arithmetic number, because the mean of its divisors is an integer number (5607705855).

Almost surely, 2^11215411709 is an apocalyptic number.

It is an amenable number.

11215411709 is a deficient number, since it is larger than the sum of its proper divisors (1).

11215411709 is an equidigital number, since it uses as much as digits as its factorization.

11215411709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 32.

The spelling of 11215411709 in words is "eleven billion, two hundred fifteen million, four hundred eleven thousand, seven hundred nine".