116666060665591 has 2 divisors, whose sum is σ = 116666060665592. Its totient is φ = 116666060665590.

The previous prime is 116666060665579. The next prime is 116666060665631. The reversal of 116666060665591 is 195566060666611.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (195566060666611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 116666060665591 - 2⁵ = 116666060665559 is a prime.

It is a super-2 number, since 2×116666060665591² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116666060645591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58333030332795 + 58333030332796.

It is an arithmetic number, because the mean of its divisors is an integer number (58333030332796).

Almost surely, 2^{116666060665591} is an apocalyptic number.

116666060665591 is a deficient number, since it is larger than the sum of its proper divisors (1).

116666060665591 is an equidigital number, since it uses as much as digits as its factorization.

116666060665591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62985600, while the sum is 64.

The spelling of 116666060665591 in words is "one hundred sixteen trillion, six hundred sixty-six billion, sixty million, six hundred sixty-five thousand, five hundred ninety-one".