12543554341 has 4 divisors (see below), whose sum is σ = 12545812300. Its totient is φ = 12541296384.

The previous prime is 12543554339. The next prime is 12543554389. The reversal of 12543554341 is 14345534521.

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 2559348100 + 9984206241 = 50590^2 + 99921^2 .

It is a cyclic number.

It is not a de Polignac number, because 12543554341 - 2¹ = 12543554339 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12543554341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12543554041) 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, 1120626 + ... + 1131763.

It is an arithmetic number, because the mean of its divisors is an integer number (3136453075).

Almost surely, 2^12543554341 is an apocalyptic number.

It is an amenable number.

12543554341 is a deficient number, since it is larger than the sum of its proper divisors (2257959).

12543554341 is an equidigital number, since it uses as much as digits as its factorization.

12543554341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2257958.

The product of its digits is 144000, while the sum is 37.

It can be divided in two parts, 125435 and 54341, that added together give a square (179776 = 424²).

The spelling of 12543554341 in words is "twelve billion, five hundred forty-three million, five hundred fifty-four thousand, three hundred forty-one".