11691122366 has 144 divisors (see below), whose sum is σ = 23268818160. Its totient is φ = 4386412800.

The previous prime is 11691122363. The next prime is 11691122369. The reversal of 11691122366 is 66322119611.

It is an interprime number because it is at equal distance from previous prime (11691122363) and next prime (11691122369).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11691122363) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 67578656 + ... + 67578828.

It is an arithmetic number, because the mean of its divisors is an integer number (161589015).

Almost surely, 2^11691122366 is an apocalyptic number.

11691122366 is a deficient number, since it is larger than the sum of its proper divisors (11577695794).

11691122366 is a wasteful number, since it uses less digits than its factorization.

11691122366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391 (or 373 counting only the distinct ones).

The product of its digits is 23328, while the sum is 38.

The spelling of 11691122366 in words is "eleven billion, six hundred ninety-one million, one hundred twenty-two thousand, three hundred sixty-six".