12383819144 has 8 divisors (see below), whose sum is σ = 23219660910. Its totient is φ = 6191909568.

The previous prime is 12383819143. The next prime is 12383819159. The reversal of 12383819144 is 44191838321.

It can be written as a sum of positive squares in only one way, i.e., 9872807044 + 2511012100 = 99362^2 + 50110^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 12383819095 and 12383819104.

It is not an unprimeable number, because it can be changed into a prime (12383819143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 773988689 + ... + 773988704.

Almost surely, 2^12383819144 is an apocalyptic number.

It is an amenable number.

12383819144 is a deficient number, since it is larger than the sum of its proper divisors (10835841766).

12383819144 is a wasteful number, since it uses less digits than its factorization.

12383819144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547977399 (or 1547977395 counting only the distinct ones).

The product of its digits is 165888, while the sum is 44.

The spelling of 12383819144 in words is "twelve billion, three hundred eighty-three million, eight hundred nineteen thousand, one hundred forty-four".