11987722240 has 224 divisors, whose sum is σ = 31707002880. Its totient is φ = 4323016704.

The previous prime is 11987722237. The next prime is 11987722273. The reversal of 11987722240 is 4222778911.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25026321 + ... + 25026799.

It is an arithmetic number, because the mean of its divisors is an integer number (141549120).

Almost surely, 2^11987722240 is an apocalyptic number.

11987722240 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 11987722240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15853501440).

11987722240 is an abundant number, since it is smaller than the sum of its proper divisors (19719280640).

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

11987722240 is an equidigital number, since it uses as much as digits as its factorization.

11987722240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570 (or 546 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 43.

The spelling of 11987722240 in words is "eleven billion, nine hundred eighty-seven million, seven hundred twenty-two thousand, two hundred forty".