12138119554 has 16 divisors (see below), whose sum is σ = 19972120896. Its totient is φ = 5486842800.

The previous prime is 12138119551. The next prime is 12138119569. The reversal of 12138119554 is 45591183121.

It is not an unprimeable number, because it can be changed into a prime (12138119551) 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, 1520142 + ... + 1528105.

It is an arithmetic number, because the mean of its divisors is an integer number (1248257556).

Almost surely, 2^12138119554 is an apocalyptic number.

12138119554 is a deficient number, since it is larger than the sum of its proper divisors (7834001342).

12138119554 is a wasteful number, since it uses less digits than its factorization.

12138119554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3048441.

The product of its digits is 43200, while the sum is 40.

The spelling of 12138119554 in words is "twelve billion, one hundred thirty-eight million, one hundred nineteen thousand, five hundred fifty-four".