11491799567 has 8 divisors (see below), whose sum is σ = 11509039872. Its totient is φ = 11474575000.

The previous prime is 11491799537. The next prime is 11491799593. The reversal of 11491799567 is 76599719411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11491799567 - 2¹⁴ = 11491783183 is a prime.

It is a super-2 number, since 2×11491799567² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11491799537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2416442 + ... + 2421192.

It is an arithmetic number, because the mean of its divisors is an integer number (1438629984).

Almost surely, 2^11491799567 is an apocalyptic number.

11491799567 is a deficient number, since it is larger than the sum of its proper divisors (17240305).

11491799567 is a wasteful number, since it uses less digits than its factorization.

11491799567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7869.

The product of its digits is 4286520, while the sum is 59.

The spelling of 11491799567 in words is "eleven billion, four hundred ninety-one million, seven hundred ninety-nine thousand, five hundred sixty-seven".