12047404551 has 24 divisors (see below), whose sum is σ = 20123140464. Its totient is φ = 6354673920.

The previous prime is 12047404517. The next prime is 12047404561. The reversal of 12047404551 is 15540474021.

It is not a de Polignac number, because 12047404551 - 2¹⁰ = 12047403527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12047404511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3150210 + ... + 3154031.

It is an arithmetic number, because the mean of its divisors is an integer number (838464186).

Almost surely, 2^12047404551 is an apocalyptic number.

12047404551 is a deficient number, since it is larger than the sum of its proper divisors (8075735913).

12047404551 is a wasteful number, since it uses less digits than its factorization.

12047404551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6304271 (or 6304264 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 33.

Adding to 12047404551 its reverse (15540474021), we get a palindrome (27587878572).

The spelling of 12047404551 in words is "twelve billion, forty-seven million, four hundred four thousand, five hundred fifty-one".