11201918667 has 4 divisors (see below), whose sum is σ = 14935891560. Its totient is φ = 7467945776.

The previous prime is 11201918659. The next prime is 11201918669. The reversal of 11201918667 is 76681910211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76681910211 = 3 ⋅25560636737.

It is a cyclic number.

It is not a de Polignac number, because 11201918667 - 2³ = 11201918659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11201918669) 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, 1866986442 + ... + 1866986447.

It is an arithmetic number, because the mean of its divisors is an integer number (3733972890).

Almost surely, 2^11201918667 is an apocalyptic number.

11201918667 is a deficient number, since it is larger than the sum of its proper divisors (3733972893).

11201918667 is an equidigital number, since it uses as much as digits as its factorization.

11201918667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3733972892.

The product of its (nonzero) digits is 36288, while the sum is 42.

The spelling of 11201918667 in words is "eleven billion, two hundred one million, nine hundred eighteen thousand, six hundred sixty-seven".