11512663660111 has 4 divisors (see below), whose sum is σ = 11513428483752. Its totient is φ = 11511898836472.

The previous prime is 11512663660097. The next prime is 11512663660139. The reversal of 11512663660111 is 11106636621511.

It is a happy number.

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 11512663660111 - 2⁹ = 11512663659599 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 (11512663661111) 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, 382389241 + ... + 382419346.

It is an arithmetic number, because the mean of its divisors is an integer number (2878357120938).

Almost surely, 2^{11512663660111} is an apocalyptic number.

11512663660111 is a deficient number, since it is larger than the sum of its proper divisors (764823641).

11512663660111 is an equidigital number, since it uses as much as digits as its factorization.

11512663660111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764823640.

The product of its (nonzero) digits is 38880, while the sum is 40.

The spelling of 11512663660111 in words is "eleven trillion, five hundred twelve billion, six hundred sixty-three million, six hundred sixty thousand, one hundred eleven".