11591492667 has 4 divisors (see below), whose sum is σ = 15455323560. Its totient is φ = 7727661776.

The previous prime is 11591492639. The next prime is 11591492669. The reversal of 11591492667 is 76629419511.

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 11591492667 - 2⁶ = 11591492603 is a prime.

It is a super-2 number, since 2×11591492667² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11591492669) 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, 1931915442 + ... + 1931915447.

It is an arithmetic number, because the mean of its divisors is an integer number (3863830890).

Almost surely, 2^11591492667 is an apocalyptic number.

11591492667 is a deficient number, since it is larger than the sum of its proper divisors (3863830893).

11591492667 is an equidigital number, since it uses as much as digits as its factorization.

11591492667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3863830892.

The product of its digits is 816480, while the sum is 51.

The spelling of 11591492667 in words is "eleven billion, five hundred ninety-one million, four hundred ninety-two thousand, six hundred sixty-seven".