11662790905 has 8 divisors (see below), whose sum is σ = 14373601992. Its totient is φ = 9078064128.

The previous prime is 11662790869. The next prime is 11662790917. The reversal of 11662790905 is 50909726611.

It can be written as a sum of positive squares in 4 ways, for example, as 4713234409 + 6949556496 = 68653^2 + 83364^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11662790905 - 2³¹ = 9515307257 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31520872 + ... + 31521241.

It is an arithmetic number, because the mean of its divisors is an integer number (1796700249).

Almost surely, 2^11662790905 is an apocalyptic number.

It is an amenable number.

11662790905 is a deficient number, since it is larger than the sum of its proper divisors (2710811087).

11662790905 is an equidigital number, since it uses as much as digits as its factorization.

11662790905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63042155.

The product of its (nonzero) digits is 204120, while the sum is 46.

The spelling of 11662790905 in words is "eleven billion, six hundred sixty-two million, seven hundred ninety thousand, nine hundred five".