11415755213 has 2 divisors, whose sum is σ = 11415755214. Its totient is φ = 11415755212.

The previous prime is 11415755149. The next prime is 11415755321. The reversal of 11415755213 is 31255751411.

Together with next prime (11415755321) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9513661444 + 1902093769 = 97538^2 + 43613^2 .

It is an emirp because it is prime and its reverse (31255751411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11415755213 - 2⁶ = 11415755149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11415752213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5707877606 + 5707877607.

It is an arithmetic number, because the mean of its divisors is an integer number (5707877607).

Almost surely, 2^11415755213 is an apocalyptic number.

It is an amenable number.

11415755213 is a deficient number, since it is larger than the sum of its proper divisors (1).

11415755213 is an equidigital number, since it uses as much as digits as its factorization.

11415755213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21000, while the sum is 35.

The spelling of 11415755213 in words is "eleven billion, four hundred fifteen million, seven hundred fifty-five thousand, two hundred thirteen".