11981112258 has 16 divisors (see below), whose sum is σ = 24788508480. Its totient is φ = 3855990096.

The previous prime is 11981112251. The next prime is 11981112281. The reversal of 11981112258 is 85221118911.

It is not an unprimeable number, because it can be changed into a prime (11981112251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34428310 + ... + 34428657.

It is an arithmetic number, because the mean of its divisors is an integer number (1549281780).

Almost surely, 2^11981112258 is an apocalyptic number.

11981112258 is an abundant number, since it is smaller than the sum of its proper divisors (12807396222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11981112258 is a wasteful number, since it uses less digits than its factorization.

11981112258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68857001.

The product of its digits is 11520, while the sum is 39.

The spelling of 11981112258 in words is "eleven billion, nine hundred eighty-one million, one hundred twelve thousand, two hundred fifty-eight".