11563451055 has 40 divisors (see below), whose sum is σ = 22323071232. Its totient is φ = 5692773312.

The previous prime is 11563451041. The next prime is 11563451057. The reversal of 11563451055 is 55015436511.

11563451055 is a `hidden beast` number, since 1 + 1 + 5 + 634 + 5 + 10 + 5 + 5 = 666.

11563451055 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11563451055 - 2⁵ = 11563451023 is a prime.

It is a super-2 number, since 2×11563451055² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11563451057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1092879 + ... + 1103408.

Almost surely, 2^11563451055 is an apocalyptic number.

11563451055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11563451055 is a deficient number, since it is larger than the sum of its proper divisors (10759620177).

11563451055 is a wasteful number, since it uses less digits than its factorization.

11563451055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2196317 (or 2196308 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

Adding to 11563451055 its reverse (55015436511), we get a palindrome (66578887566).

The spelling of 11563451055 in words is "eleven billion, five hundred sixty-three million, four hundred fifty-one thousand, fifty-five".