11020161605 has 4 divisors (see below), whose sum is σ = 13224193932. Its totient is φ = 8816129280.

The previous prime is 11020161599. The next prime is 11020161667. The reversal of 11020161605 is 50616102011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50616102011 = 19 ⋅2664005369.

It can be written as a sum of positive squares in 2 ways, for example, as 2094069121 + 8926092484 = 45761^2 + 94478^2 .

It is not a de Polignac number, because 11020161605 - 2¹⁶ = 11020096069 is a prime.

It is a Duffinian number.

It is a Curzon number.

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, 1102016156 + ... + 1102016165.

It is an arithmetic number, because the mean of its divisors is an integer number (3306048483).

Almost surely, 2^11020161605 is an apocalyptic number.

It is an amenable number.

11020161605 is a deficient number, since it is larger than the sum of its proper divisors (2204032327).

11020161605 is an equidigital number, since it uses as much as digits as its factorization.

11020161605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2204032326.

The product of its (nonzero) digits is 360, while the sum is 23.

Adding to 11020161605 its reverse (50616102011), we get a palindrome (61636263616).

The spelling of 11020161605 in words is "eleven billion, twenty million, one hundred sixty-one thousand, six hundred five".