5551144340243 has 4 divisors (see below), whose sum is σ = 5602072270080. Its totient is φ = 5500216410408.

The previous prime is 5551144340141. The next prime is 5551144340279. The reversal of 5551144340243 is 3420434411555.

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

It is a cyclic number.

It is not a de Polignac number, because 5551144340243 - 2²² = 5551140145939 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 5551144340243.

It is not an unprimeable number, because it can be changed into a prime (5551144340843) 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, 25463964755 + ... + 25463964972.

It is an arithmetic number, because the mean of its divisors is an integer number (1400518067520).

Almost surely, 2^{5551144340243} is an apocalyptic number.

5551144340243 is a deficient number, since it is larger than the sum of its proper divisors (50927929837).

5551144340243 is a wasteful number, since it uses less digits than its factorization.

5551144340243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50927929836.

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

Adding to 5551144340243 its reverse (3420434411555), we get a palindrome (8971578751798).

The spelling of 5551144340243 in words is "five trillion, five hundred fifty-one billion, one hundred forty-four million, three hundred forty thousand, two hundred forty-three".