11215163744887 has 4 divisors (see below), whose sum is σ = 11475981506440. Its totient is φ = 10954345983336.

The previous prime is 11215163744881. The next prime is 11215163744951. The reversal of 11215163744887 is 78844736151211.

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 11215163744887 - 2²⁷ = 11215029527159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11215163744881) 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, 130408880712 + ... + 130408880797.

It is an arithmetic number, because the mean of its divisors is an integer number (2868995376610).

Almost surely, 2^{11215163744887} is an apocalyptic number.

11215163744887 is a deficient number, since it is larger than the sum of its proper divisors (260817761553).

11215163744887 is an equidigital number, since it uses as much as digits as its factorization.

11215163744887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260817761552.

The product of its digits is 9031680, while the sum is 58.

The spelling of 11215163744887 in words is "eleven trillion, two hundred fifteen billion, one hundred sixty-three million, seven hundred forty-four thousand, eight hundred eighty-seven".