11550630661 has 8 divisors (see below), whose sum is σ = 12144814200. Its totient is φ = 10969506240.

The previous prime is 11550630599. The next prime is 11550630667. The reversal of 11550630661 is 16603605511.

It can be written as a sum of positive squares in 4 ways, for example, as 2469493636 + 9081137025 = 49694^2 + 95295^2 .

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 11550630661 - 2⁹ = 11550630149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11550630667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3262966 + ... + 3266503.

It is an arithmetic number, because the mean of its divisors is an integer number (1518101775).

Almost surely, 2^11550630661 is an apocalyptic number.

It is an amenable number.

11550630661 is a deficient number, since it is larger than the sum of its proper divisors (594183539).

11550630661 is an equidigital number, since it uses as much as digits as its factorization.

11550630661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6529559.

The product of its (nonzero) digits is 16200, while the sum is 34.

The spelling of 11550630661 in words is "eleven billion, five hundred fifty million, six hundred thirty thousand, six hundred sixty-one".