12405234432551 has 8 divisors (see below), whose sum is σ = 13134990590640. Its totient is φ = 11675482328448.

The previous prime is 12405234432511. The next prime is 12405234432571. The reversal of 12405234432551 is 15523443250421.

12405234432551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-12405234432551 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12405234432499 and 12405234432508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12405234432511) 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, 7178420 + ... + 8737286.

It is an arithmetic number, because the mean of its divisors is an integer number (1641873823830).

Almost surely, 2^{12405234432551} is an apocalyptic number.

12405234432551 is a deficient number, since it is larger than the sum of its proper divisors (729756158089).

12405234432551 is a wasteful number, since it uses less digits than its factorization.

12405234432551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2026993.

The product of its (nonzero) digits is 576000, while the sum is 41.

Adding to 12405234432551 its reverse (15523443250421), we get a palindrome (27928677682972).

The spelling of 12405234432551 in words is "twelve trillion, four hundred five billion, two hundred thirty-four million, four hundred thirty-two thousand, five hundred fifty-one".