11550455663 has 4 divisors (see below), whose sum is σ = 11551349088. Its totient is φ = 11549562240.

The previous prime is 11550455603. The next prime is 11550455669. The reversal of 11550455663 is 36655405511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11550455663 - 2²⁰ = 11549407087 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11550455663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11550455669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427031 + ... + 453272.

It is an arithmetic number, because the mean of its divisors is an integer number (2887837272).

Almost surely, 2^11550455663 is an apocalyptic number.

11550455663 is a deficient number, since it is larger than the sum of its proper divisors (893425).

11550455663 is an equidigital number, since it uses as much as digits as its factorization.

11550455663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893424.

The product of its (nonzero) digits is 270000, while the sum is 41.

The spelling of 11550455663 in words is "eleven billion, five hundred fifty million, four hundred fifty-five thousand, six hundred sixty-three".