11726442320 has 80 divisors (see below), whose sum is σ = 28229800320. Its totient is φ = 4524710400.

The previous prime is 11726442313. The next prime is 11726442347. The reversal of 11726442320 is 2324462711.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4200125 + ... + 4202915.

It is an arithmetic number, because the mean of its divisors is an integer number (352872504).

Almost surely, 2^11726442320 is an apocalyptic number.

11726442320 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 11726442320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14114900160).

11726442320 is an abundant number, since it is smaller than the sum of its proper divisors (16503358000).

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

11726442320 is a wasteful number, since it uses less digits than its factorization.

11726442320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4644 (or 4638 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The spelling of 11726442320 in words is "eleven billion, seven hundred twenty-six million, four hundred forty-two thousand, three hundred twenty".