11885521858 has 32 divisors (see below), whose sum is σ = 21604176000. Its totient is φ = 4790461824.

The previous prime is 11885521811. The next prime is 11885521859. The reversal of 11885521858 is 85812558811.

It is a happy number.

11885521858 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (11885521859) 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 15 ways as a sum of consecutive naturals, for example, 126633 + ... + 199516.

It is an arithmetic number, because the mean of its divisors is an integer number (675130500).

Almost surely, 2^11885521858 is an apocalyptic number.

11885521858 is a deficient number, since it is larger than the sum of its proper divisors (9718654142).

11885521858 is a wasteful number, since it uses less digits than its factorization.

11885521858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326314.

The product of its digits is 1024000, while the sum is 52.

The spelling of 11885521858 in words is "eleven billion, eight hundred eighty-five million, five hundred twenty-one thousand, eight hundred fifty-eight".