11923443144 has 24 divisors (see below), whose sum is σ = 32292658710. Its totient is φ = 3974481024.

The previous prime is 11923443143. The next prime is 11923443173. The reversal of 11923443144 is 44134432911.

11923443144 is a `hidden beast` number, since 1 + 192 + 34 + 431 + 4 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11371663044 + 551780100 = 106638^2 + 23490^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 11923443099 and 11923443108.

It is not an unprimeable number, because it can be changed into a prime (11923443143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 82801617 + ... + 82801760.

Almost surely, 2^11923443144 is an apocalyptic number.

It is an amenable number.

11923443144 is an abundant number, since it is smaller than the sum of its proper divisors (20369215566).

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

11923443144 is a wasteful number, since it uses less digits than its factorization.

11923443144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165603389 (or 165603382 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The spelling of 11923443144 in words is "eleven billion, nine hundred twenty-three million, four hundred forty-three thousand, one hundred forty-four".