1065521745571 has 2 divisors, whose sum is σ = 1065521745572. Its totient is φ = 1065521745570.

The previous prime is 1065521745521. The next prime is 1065521745641. The reversal of 1065521745571 is 1755471255601.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1065521745571 - 2²⁹ = 1064984874659 is a prime.

It is a super-2 number, since 2×1065521745571² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1065521745521) 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 as a sum of consecutive naturals, namely, 532760872785 + 532760872786.

It is an arithmetic number, because the mean of its divisors is an integer number (532760872786).

Almost surely, 2^{1065521745571} is an apocalyptic number.

1065521745571 is a deficient number, since it is larger than the sum of its proper divisors (1).

1065521745571 is an equidigital number, since it uses as much as digits as its factorization.

1065521745571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1470000, while the sum is 49.

The spelling of 1065521745571 in words is "one trillion, sixty-five billion, five hundred twenty-one million, seven hundred forty-five thousand, five hundred seventy-one".