11808501144 has 32 divisors (see below), whose sum is σ = 32205003840. Its totient is φ = 3578333600.

The previous prime is 11808501119. The next prime is 11808501149. The reversal of 11808501144 is 44110580811.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11808501149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22364322 + ... + 22364849.

It is an arithmetic number, because the mean of its divisors is an integer number (1006406370).

Almost surely, 2^11808501144 is an apocalyptic number.

It is an amenable number.

11808501144 is an abundant number, since it is smaller than the sum of its proper divisors (20396502696).

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

11808501144 is a wasteful number, since it uses less digits than its factorization.

11808501144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44729191 (or 44729187 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 33.

The spelling of 11808501144 in words is "eleven billion, eight hundred eight million, five hundred one thousand, one hundred forty-four".