11513211206267 has 4 divisors (see below), whose sum is σ = 11544582354336. Its totient is φ = 11481840058200.

The previous prime is 11513211206257. The next prime is 11513211206293. The reversal of 11513211206267 is 76260211231511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11513211206267 - 2⁴ = 11513211206251 is a prime.

It is a super-2 number, since 2×11513211206267² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11513211206267.

It is not an unprimeable number, because it can be changed into a prime (11513211206257) 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, 15685573484 + ... + 15685574217.

It is an arithmetic number, because the mean of its divisors is an integer number (2886145588584).

Almost surely, 2^{11513211206267} is an apocalyptic number.

11513211206267 is a deficient number, since it is larger than the sum of its proper divisors (31371148069).

11513211206267 is an equidigital number, since it uses as much as digits as its factorization.

11513211206267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31371148068.

The product of its (nonzero) digits is 30240, while the sum is 38.

Adding to 11513211206267 its reverse (76260211231511), we get a palindrome (87773422437778).

The spelling of 11513211206267 in words is "eleven trillion, five hundred thirteen billion, two hundred eleven million, two hundred six thousand, two hundred sixty-seven".