11591813955 has 16 divisors (see below), whose sum is σ = 18680336640. Its totient is φ = 6137822688.

The previous prime is 11591813921. The next prime is 11591813993. The reversal of 11591813955 is 55931819511.

11591813955 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 11591813955 - 2⁸ = 11591813699 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2777727 + ... + 2781896.

It is an arithmetic number, because the mean of its divisors is an integer number (1167521040).

Almost surely, 2^11591813955 is an apocalyptic number.

11591813955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11591813955 is a deficient number, since it is larger than the sum of its proper divisors (7088522685).

11591813955 is a wasteful number, since it uses less digits than its factorization.

11591813955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5559770.

The product of its digits is 243000, while the sum is 48.

The spelling of 11591813955 in words is "eleven billion, five hundred ninety-one million, eight hundred thirteen thousand, nine hundred fifty-five".