1066551115013 has 2 divisors, whose sum is σ = 1066551115014. Its totient is φ = 1066551115012.

The previous prime is 1066551115001. The next prime is 1066551115027. The reversal of 1066551115013 is 3105111556601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 666642856324 + 399908258689 = 816482^2 + 632383^2 .

It is a cyclic number.

It is not a de Polignac number, because 1066551115013 - 2⁴ = 1066551114997 is a prime.

It is a super-2 number, since 2×1066551115013² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1066551115033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533275557506 + 533275557507.

It is an arithmetic number, because the mean of its divisors is an integer number (533275557507).

Almost surely, 2^{1066551115013} is an apocalyptic number.

It is an amenable number.

1066551115013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066551115013 is an equidigital number, since it uses as much as digits as its factorization.

1066551115013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13500, while the sum is 35.

The spelling of 1066551115013 in words is "one trillion, sixty-six billion, five hundred fifty-one million, one hundred fifteen thousand, thirteen".