11166051605 has 16 divisors (see below), whose sum is σ = 14259492720. Its totient is φ = 8364690432.

The previous prime is 11166051601. The next prime is 11166051691. The reversal of 11166051605 is 50615066111.

It can be written as a sum of positive squares in 8 ways, for example, as 1568714449 + 9597337156 = 39607^2 + 97966^2 .

It is a cyclic number.

It is not a de Polignac number, because 11166051605 - 2² = 11166051601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11166051601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316670 + ... + 350159.

It is an arithmetic number, because the mean of its divisors is an integer number (891218295).

Almost surely, 2^11166051605 is an apocalyptic number.

It is an amenable number.

11166051605 is a deficient number, since it is larger than the sum of its proper divisors (3093441115).

11166051605 is a wasteful number, since it uses less digits than its factorization.

11166051605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667048.

The product of its (nonzero) digits is 5400, while the sum is 32.

The spelling of 11166051605 in words is "eleven billion, one hundred sixty-six million, fifty-one thousand, six hundred five".