11566937604043 has 2 divisors, whose sum is σ = 11566937604044. Its totient is φ = 11566937604042.

The previous prime is 11566937604023. The next prime is 11566937604083. The reversal of 11566937604043 is 34040673966511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11566937604043 - 2²⁵ = 11566904049611 is a prime.

It is not a weakly prime, because it can be changed into another prime (11566937604023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5783468802021 + 5783468802022.

It is an arithmetic number, because the mean of its divisors is an integer number (5783468802022).

Almost surely, 2^{11566937604043} is an apocalyptic number.

11566937604043 is a deficient number, since it is larger than the sum of its proper divisors (1).

11566937604043 is an equidigital number, since it uses as much as digits as its factorization.

11566937604043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9797760, while the sum is 55.

The spelling of 11566937604043 in words is "eleven trillion, five hundred sixty-six billion, nine hundred thirty-seven million, six hundred four thousand, forty-three".