11888998551 has 12 divisors (see below), whose sum is σ = 17174141712. Its totient is φ = 7925471136.

The previous prime is 11888998519. The next prime is 11888998553. The reversal of 11888998551 is 15589988811.

11888998551 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 11888998551 - 2⁵ = 11888998519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11888998553) 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 11 ways as a sum of consecutive naturals, for example, 138475 + ... + 207251.

It is an arithmetic number, because the mean of its divisors is an integer number (1431178476).

Almost surely, 2^11888998551 is an apocalyptic number.

11888998551 is a deficient number, since it is larger than the sum of its proper divisors (5285143161).

11888998551 is a wasteful number, since it uses less digits than its factorization.

11888998551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87990 (or 87987 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 63.

The spelling of 11888998551 in words is "eleven billion, eight hundred eighty-eight million, nine hundred ninety-eight thousand, five hundred fifty-one".