12554120413 has 4 divisors (see below), whose sum is σ = 12554643100. Its totient is φ = 12553597728.

The previous prime is 12554120393. The next prime is 12554120431. The reversal of 12554120413 is 31402145521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9788727844 + 2765392569 = 98938^2 + 52587^2 .

It is a cyclic number.

It is not a de Polignac number, because 12554120413 - 2²¹ = 12552023261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12554120473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223488 + ... + 273961.

It is an arithmetic number, because the mean of its divisors is an integer number (3138660775).

Almost surely, 2^12554120413 is an apocalyptic number.

It is an amenable number.

12554120413 is a deficient number, since it is larger than the sum of its proper divisors (522687).

12554120413 is an equidigital number, since it uses as much as digits as its factorization.

12554120413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522686.

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

Adding to 12554120413 its reverse (31402145521), we get a palindrome (43956265934).

The spelling of 12554120413 in words is "twelve billion, five hundred fifty-four million, one hundred twenty thousand, four hundred thirteen".