1065611011 has 4 divisors (see below), whose sum is σ = 1065791224. Its totient is φ = 1065430800.

The previous prime is 1065611009. The next prime is 1065611023. The reversal of 1065611011 is 1101165601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1101165601 = 31 ⋅35521471.

It is a cyclic number.

It is not a de Polignac number, because 1065611011 - 2¹ = 1065611009 is a prime.

It is a super-2 number, since 2×1065611011² = 2271053653528884242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1065611111) 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, 80925 + ... + 93166.

It is an arithmetic number, because the mean of its divisors is an integer number (266447806).

Almost surely, 2^1065611011 is an apocalyptic number.

1065611011 is a deficient number, since it is larger than the sum of its proper divisors (180213).

1065611011 is an equidigital number, since it uses as much as digits as its factorization.

1065611011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180212.

The product of its (nonzero) digits is 180, while the sum is 22.

The square root of 1065611011 is about 32643.6978757003. The cubic root of 1065611011 is about 1021.4087323952.

Adding to 1065611011 its reverse (1101165601), we get a palindrome (2166776612).

The spelling of 1065611011 in words is "one billion, sixty-five million, six hundred eleven thousand, eleven".