1065660561151 has 4 divisors (see below), whose sum is σ = 1065681702592. Its totient is φ = 1065639419712.

The previous prime is 1065660561149. The next prime is 1065660561191. The reversal of 1065660561151 is 1511650665601.

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

It is a cyclic number.

It is not a de Polignac number, because 1065660561151 - 2¹ = 1065660561149 is a prime.

It is a super-2 number, since 2×1065660561151² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1065660561098 and 1065660561107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1065660561101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10494930 + ... + 10595983.

It is an arithmetic number, because the mean of its divisors is an integer number (266420425648).

Almost surely, 2^{1065660561151} is an apocalyptic number.

1065660561151 is a deficient number, since it is larger than the sum of its proper divisors (21141441).

1065660561151 is an equidigital number, since it uses as much as digits as its factorization.

1065660561151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21141440.

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 1065660561151 in words is "one trillion, sixty-five billion, six hundred sixty million, five hundred sixty-one thousand, one hundred fifty-one".