1166065650587 has 2 divisors, whose sum is σ = 1166065650588. Its totient is φ = 1166065650586.

The previous prime is 1166065650583. The next prime is 1166065650677. The reversal of 1166065650587 is 7850565606611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1166065650587 - 2² = 1166065650583 is a prime.

It is a super-5 number, since 5×1166065650587⁵ (a number of 62 digits) contains 55555 as substring.

It is not a weakly prime, because it can be changed into another prime (1166065650583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583032825293 + 583032825294.

It is an arithmetic number, because the mean of its divisors is an integer number (583032825294).

Almost surely, 2^{1166065650587} is an apocalyptic number.

1166065650587 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166065650587 is an equidigital number, since it uses as much as digits as its factorization.

1166065650587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072000, while the sum is 56.

The spelling of 1166065650587 in words is "one trillion, one hundred sixty-six billion, sixty-five million, six hundred fifty thousand, five hundred eighty-seven".