1065279591611 has 4 divisors (see below), whose sum is σ = 1065452168592. Its totient is φ = 1065107014632.

The previous prime is 1065279591577. The next prime is 1065279591631. The reversal of 1065279591611 is 1161959725601.

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-1065279591611 is a prime.

It is a super-2 number, since 2×1065279591611² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1065279591631) 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, 86279231 + ... + 86291576.

It is an arithmetic number, because the mean of its divisors is an integer number (266363042148).

Almost surely, 2^{1065279591611} is an apocalyptic number.

1065279591611 is a deficient number, since it is larger than the sum of its proper divisors (172576981).

1065279591611 is an equidigital number, since it uses as much as digits as its factorization.

1065279591611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172576980.

The product of its (nonzero) digits is 1020600, while the sum is 53.

The spelling of 1065279591611 in words is "one trillion, sixty-five billion, two hundred seventy-nine million, five hundred ninety-one thousand, six hundred eleven".