11550366817 has 12 divisors (see below), whose sum is σ = 13364063440. Its totient is φ = 9947682360.

The previous prime is 11550366781. The next prime is 11550366823. The reversal of 11550366817 is 71866305511.

It is not a de Polignac number, because 11550366817 - 2¹¹ = 11550364769 is a prime.

It is a super-2 number, since 2×11550366817² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11550366827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2509743 + ... + 2514340.

Almost surely, 2^11550366817 is an apocalyptic number.

It is an amenable number.

11550366817 is a deficient number, since it is larger than the sum of its proper divisors (1813696623).

11550366817 is a wasteful number, since it uses less digits than its factorization.

11550366817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5024124 (or 5024113 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 43.

The spelling of 11550366817 in words is "eleven billion, five hundred fifty million, three hundred sixty-six thousand, eight hundred seventeen".