11716721576587 has 2 divisors, whose sum is σ = 11716721576588. Its totient is φ = 11716721576586.

The previous prime is 11716721576569. The next prime is 11716721576617. The reversal of 11716721576587 is 78567512761711.

It is a weak prime.

It is an emirp because it is prime and its reverse (78567512761711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11716721576587 - 2³⁵ = 11682361838219 is a prime.

It is not a weakly prime, because it can be changed into another prime (11716721573587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5858360788293 + 5858360788294.

It is an arithmetic number, because the mean of its divisors is an integer number (5858360788294).

Almost surely, 2^{11716721576587} is an apocalyptic number.

11716721576587 is a deficient number, since it is larger than the sum of its proper divisors (1).

11716721576587 is an equidigital number, since it uses as much as digits as its factorization.

11716721576587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34574400, while the sum is 64.

The spelling of 11716721576587 in words is "eleven trillion, seven hundred sixteen billion, seven hundred twenty-one million, five hundred seventy-six thousand, five hundred eighty-seven".