11561242700 has 108 divisors (see below), whose sum is σ = 30458206800. Its totient is φ = 3730621440.

The previous prime is 11561242681. The next prime is 11561242711. The reversal of 11561242700 is 724216511.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 173726 + ... + 230874.

Almost surely, 2^11561242700 is an apocalyptic number.

11561242700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11561242700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15229103400).

11561242700 is an abundant number, since it is smaller than the sum of its proper divisors (18896964100).

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

11561242700 is a wasteful number, since it uses less digits than its factorization.

11561242700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57204 (or 57180 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The spelling of 11561242700 in words is "eleven billion, five hundred sixty-one million, two hundred forty-two thousand, seven hundred".