11266616215 has 4 divisors (see below), whose sum is σ = 13519939464. Its totient is φ = 9013292968.

The previous prime is 11266616213. The next prime is 11266616237. The reversal of 11266616215 is 51261666211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51261666211 = 7 ⋅7323095173.

It is a cyclic number.

It is not a de Polignac number, because 11266616215 - 2¹ = 11266616213 is a prime.

It is a super-2 number, since 2×11266616215² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11266616213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1126661617 + ... + 1126661626.

It is an arithmetic number, because the mean of its divisors is an integer number (3379984866).

Almost surely, 2^11266616215 is an apocalyptic number.

11266616215 is a deficient number, since it is larger than the sum of its proper divisors (2253323249).

11266616215 is an equidigital number, since it uses as much as digits as its factorization.

11266616215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2253323248.

The product of its digits is 25920, while the sum is 37.

It can be divided in two parts, 112666 and 16215, that added together give a square (128881 = 359²).

The spelling of 11266616215 in words is "eleven billion, two hundred sixty-six million, six hundred sixteen thousand, two hundred fifteen".