12051154423 has 20 divisors (see below), whose sum is σ = 15336953928. Its totient is φ = 9390489360.

The previous prime is 12051154403. The next prime is 12051154433. The reversal of 12051154423 is 32445115021.

It is a de Polignac number, because none of the positive numbers 2^k-12051154423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12051154391 and 12051154400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12051154403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 201736 + ... + 254557.

Almost surely, 2^12051154423 is an apocalyptic number.

12051154423 is a deficient number, since it is larger than the sum of its proper divisors (3285799505).

12051154423 is an frugal number, since it uses more digits than its factorization.

12051154423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456332 (or 456311 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 12051154423 its reverse (32445115021), we get a palindrome (44496269444).

The spelling of 12051154423 in words is "twelve billion, fifty-one million, one hundred fifty-four thousand, four hundred twenty-three".