1065643527215 has 4 divisors (see below), whose sum is σ = 1278772232664. Its totient is φ = 852514821768.

The previous prime is 1065643527209. The next prime is 1065643527271. The reversal of 1065643527215 is 5127253465601.

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 1065643527215 - 2⁴ = 1065643527199 is a prime.

It is a super-2 number, since 2×1065643527215² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1065643527215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106564352717 + ... + 106564352726.

It is an arithmetic number, because the mean of its divisors is an integer number (319693058166).

Almost surely, 2^{1065643527215} is an apocalyptic number.

1065643527215 is a deficient number, since it is larger than the sum of its proper divisors (213128705449).

1065643527215 is an equidigital number, since it uses as much as digits as its factorization.

1065643527215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213128705448.

The product of its (nonzero) digits is 1512000, while the sum is 47.

The spelling of 1065643527215 in words is "one trillion, sixty-five billion, six hundred forty-three million, five hundred twenty-seven thousand, two hundred fifteen".