11340866691 has 108 divisors (see below), whose sum is σ = 21111759864. Its totient is φ = 5848975440.

The previous prime is 11340866687. The next prime is 11340866723. The reversal of 11340866691 is 19666804311.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 11340866691 - 2² = 11340866687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11340866681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 81588900 + ... + 81589038.

It is an arithmetic number, because the mean of its divisors is an integer number (195479258).

Almost surely, 2^11340866691 is an apocalyptic number.

11340866691 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11340866691 is a deficient number, since it is larger than the sum of its proper divisors (9770893173).

11340866691 is an equidigital number, since it uses as much as digits as its factorization.

11340866691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

It can be divided in two parts, 113 and 40866691, that added together give a palindrome (40866804).

The spelling of 11340866691 in words is "eleven billion, three hundred forty million, eight hundred sixty-six thousand, six hundred ninety-one".