11551665008 has 40 divisors (see below), whose sum is σ = 24208346400. Its totient is φ = 5308233984.

The previous prime is 11551664989. The next prime is 11551665023. The reversal of 11551665008 is 80056615511.

It is a congruent 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, 73628 + ... + 168891.

It is an arithmetic number, because the mean of its divisors is an integer number (605208660).

Almost surely, 2^11551665008 is an apocalyptic number.

It is an amenable number.

11551665008 is an abundant number, since it is smaller than the sum of its proper divisors (12656681392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11551665008 is a wasteful number, since it uses less digits than its factorization.

11551665008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242769 (or 242763 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 38.

The spelling of 11551665008 in words is "eleven billion, five hundred fifty-one million, six hundred sixty-five thousand, eight".