6355642543 has 4 divisors (see below), whose sum is σ = 6365910760. Its totient is φ = 6345374328.

The previous prime is 6355642493. The next prime is 6355642549. The reversal of 6355642543 is 3452465536.

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 6355642543 - 2⁹ = 6355642031 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 6355642543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6355642549) 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, 5133180 + ... + 5134417.

It is an arithmetic number, because the mean of its divisors is an integer number (1591477690).

Almost surely, 2^6355642543 is an apocalyptic number.

6355642543 is a deficient number, since it is larger than the sum of its proper divisors (10268217).

6355642543 is a wasteful number, since it uses less digits than its factorization.

6355642543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10268216.

The product of its digits is 1296000, while the sum is 43.

The square root of 6355642543 is about 79722.2838546413. The cubic root of 6355642543 is about 1852.3362297073.

The spelling of 6355642543 in words is "six billion, three hundred fifty-five million, six hundred forty-two thousand, five hundred forty-three".