11660366452591 has 2 divisors, whose sum is σ = 11660366452592. Its totient is φ = 11660366452590.

The previous prime is 11660366452523. The next prime is 11660366452619. The reversal of 11660366452591 is 19525466306611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11660366452591 - 2⁹ = 11660366452079 is a prime.

It is a super-2 number, since 2×11660366452591² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11660366450591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5830183226295 + 5830183226296.

It is an arithmetic number, because the mean of its divisors is an integer number (5830183226296).

Almost surely, 2^{11660366452591} is an apocalyptic number.

11660366452591 is a deficient number, since it is larger than the sum of its proper divisors (1).

11660366452591 is an equidigital number, since it uses as much as digits as its factorization.

11660366452591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6998400, while the sum is 55.

The spelling of 11660366452591 in words is "eleven trillion, six hundred sixty billion, three hundred sixty-six million, four hundred fifty-two thousand, five hundred ninety-one".