11533881099 has 32 divisors (see below), whose sum is σ = 16967991040. Its totient is φ = 6923968128.

The previous prime is 11533881071. The next prime is 11533881113. The reversal of 11533881099 is 99018833511.

It is not a de Polignac number, because 11533881099 - 2⁷ = 11533880971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11533881199) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1476897 + ... + 1484685.

It is an arithmetic number, because the mean of its divisors is an integer number (530249720).

Almost surely, 2^11533881099 is an apocalyptic number.

11533881099 is a deficient number, since it is larger than the sum of its proper divisors (5434109941).

11533881099 is a wasteful number, since it uses less digits than its factorization.

11533881099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8731.

The product of its (nonzero) digits is 233280, while the sum is 48.

The spelling of 11533881099 in words is "eleven billion, five hundred thirty-three million, eight hundred eighty-one thousand, ninety-nine".