11251115442 has 96 divisors (see below), whose sum is σ = 28959166080. Its totient is φ = 3088834560.

The previous prime is 11251115429. The next prime is 11251115443. The reversal of 11251115442 is 24451115211.

11251115442 is a `hidden beast` number, since 1 + 1 + 2 + 5 + 111 + 544 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (11251115443) 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 47 ways as a sum of consecutive naturals, for example, 763698 + ... + 778290.

It is an arithmetic number, because the mean of its divisors is an integer number (301657980).

Almost surely, 2^11251115442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11251115442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14479583040).

11251115442 is an abundant number, since it is smaller than the sum of its proper divisors (17708050638).

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

11251115442 is a wasteful number, since it uses less digits than its factorization.

11251115442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14848 (or 14845 counting only the distinct ones).

The product of its digits is 1600, while the sum is 27.

The spelling of 11251115442 in words is "eleven billion, two hundred fifty-one million, one hundred fifteen thousand, four hundred forty-two".