1066065515011 has 4 divisors (see below), whose sum is σ = 1218360588592. Its totient is φ = 913770441432.

The previous prime is 1066065514897. The next prime is 1066065515017. The reversal of 1066065515011 is 1105155606601.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1066065515011 is a prime.

It is a super-2 number, since 2×1066065515011² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1066065515017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76147536780 + ... + 76147536793.

It is an arithmetic number, because the mean of its divisors is an integer number (304590147148).

Almost surely, 2^{1066065515011} is an apocalyptic number.

1066065515011 is a deficient number, since it is larger than the sum of its proper divisors (152295073581).

1066065515011 is an equidigital number, since it uses as much as digits as its factorization.

1066065515011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152295073580.

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 1066065515011 in words is "one trillion, sixty-six billion, sixty-five million, five hundred fifteen thousand, eleven".