1166601055589 has 2 divisors, whose sum is σ = 1166601055590. Its totient is φ = 1166601055588.

The previous prime is 1166601055579. The next prime is 1166601055681. The reversal of 1166601055589 is 9855501066611.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1055006308225 + 111594747364 = 1027135^2 + 334058^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1166601055589 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1166601055589.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1166601055559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583300527794 + 583300527795.

It is an arithmetic number, because the mean of its divisors is an integer number (583300527795).

Almost surely, 2^{1166601055589} is an apocalyptic number.

It is an amenable number.

1166601055589 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166601055589 is an equidigital number, since it uses as much as digits as its factorization.

1166601055589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944000, while the sum is 53.

The spelling of 1166601055589 in words is "one trillion, one hundred sixty-six billion, six hundred one million, fifty-five thousand, five hundred eighty-nine".