11517924667 has 4 divisors (see below), whose sum is σ = 11889470656. Its totient is φ = 11146378680.

The previous prime is 11517924637. The next prime is 11517924673. The reversal of 11517924667 is 76642971511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76642971511 = 307 ⋅249651373.

It is a cyclic number.

It is not a de Polignac number, because 11517924667 - 2¹⁵ = 11517891899 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11517924667.

It is not an unprimeable number, because it can be changed into a prime (11517924637) 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, 185772948 + ... + 185773009.

It is an arithmetic number, because the mean of its divisors is an integer number (2972367664).

Almost surely, 2^11517924667 is an apocalyptic number.

11517924667 is a deficient number, since it is larger than the sum of its proper divisors (371545989).

11517924667 is an equidigital number, since it uses as much as digits as its factorization.

11517924667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371545988.

The product of its digits is 635040, while the sum is 49.

The spelling of 11517924667 in words is "eleven billion, five hundred seventeen million, nine hundred twenty-four thousand, six hundred sixty-seven".