11551264263 has 144 divisors (see below), whose sum is σ = 23261472000. Its totient is φ = 5436668160.

The previous prime is 11551264259. The next prime is 11551264313. The reversal of 11551264263 is 36246215511.

11551264263 is a `hidden beast` number, since 1 + 1 + 5 + 5 + 1 + 2 + 642 + 6 + 3 = 666.

It is not a de Polignac number, because 11551264263 - 2² = 11551264259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11551264063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2117163 + ... + 2122611.

It is an arithmetic number, because the mean of its divisors is an integer number (161538000).

Almost surely, 2^11551264263 is an apocalyptic number.

11551264263 is an abundant number, since it is smaller than the sum of its proper divisors (11710207737).

11551264263 is a wasteful number, since it uses less digits than its factorization.

11551264263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5522 (or 5512 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

Adding to 11551264263 its reverse (36246215511), we get a palindrome (47797479774).

The spelling of 11551264263 in words is "eleven billion, five hundred fifty-one million, two hundred sixty-four thousand, two hundred sixty-three".