11266606787987 has 4 divisors (see below), whose sum is σ = 11266729595016. Its totient is φ = 11266483980960.

The previous prime is 11266606787983. The next prime is 11266606787993. The reversal of 11266606787987 is 78978760666211.

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 11266606787987 - 2² = 11266606787983 is a prime.

It is a super-2 number, since 2×11266606787987² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11266606787981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61265798 + ... + 61449419.

It is an arithmetic number, because the mean of its divisors is an integer number (2816682398754).

Almost surely, 2^{11266606787987} is an apocalyptic number.

11266606787987 is a deficient number, since it is larger than the sum of its proper divisors (122807029).

11266606787987 is an equidigital number, since it uses as much as digits as its factorization.

11266606787987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122807028.

The product of its (nonzero) digits is 512096256, while the sum is 74.

The spelling of 11266606787987 in words is "eleven trillion, two hundred sixty-six billion, six hundred six million, seven hundred eighty-seven thousand, nine hundred eighty-seven".