11162021605 has 16 divisors (see below), whose sum is σ = 15309661824. Its totient is φ = 7653084480.

The previous prime is 11162021581. The next prime is 11162021659. The reversal of 11162021605 is 50612026111.

It is a happy number.

It is not a de Polignac number, because 11162021605 - 2³³ = 2572087013 is a prime.

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 11162021605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 504475 + ... + 526135.

It is an arithmetic number, because the mean of its divisors is an integer number (956853864).

Almost surely, 2^11162021605 is an apocalyptic number.

It is an amenable number.

11162021605 is a deficient number, since it is larger than the sum of its proper divisors (4147640219).

11162021605 is a wasteful number, since it uses less digits than its factorization.

11162021605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36396.

The product of its (nonzero) digits is 720, while the sum is 25.

Adding to 11162021605 its reverse (50612026111), we get a palindrome (61774047716).

It can be divided in two parts, 111620 and 21605, that added together give a square (133225 = 365²).

The spelling of 11162021605 in words is "eleven billion, one hundred sixty-two million, twenty-one thousand, six hundred five".