11558788655 has 16 divisors (see below), whose sum is σ = 13963757184. Its totient is φ = 9185084160.

The previous prime is 11558788639. The next prime is 11558788669. The reversal of 11558788655 is 55688785511.

It is a happy number.

It is not a de Polignac number, because 11558788655 - 2⁴ = 11558788639 is a prime.

It is a super-4 number, since 4×11558788655⁴ (a number of 41 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11558788594 and 11558788603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 478682 + ... + 502248.

It is an arithmetic number, because the mean of its divisors is an integer number (872734824).

Almost surely, 2^11558788655 is an apocalyptic number.

11558788655 is a deficient number, since it is larger than the sum of its proper divisors (2404968529).

11558788655 is a wasteful number, since it uses less digits than its factorization.

11558788655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24226.

The product of its digits is 13440000, while the sum is 59.

The spelling of 11558788655 in words is "eleven billion, five hundred fifty-eight million, seven hundred eighty-eight thousand, six hundred fifty-five".