6543430454043 has 24 divisors (see below), whose sum is σ = 10802112423648. Its totient is φ = 3739013471232.

The previous prime is 6543430453981. The next prime is 6543430454059. The reversal of 6543430454043 is 3404540343456.

It is a happy number.

6543430454043 is a `hidden beast` number, since 6 + 5 + 4 + 34 + 30 + 4 + 540 + 43 = 666.

It is not a de Polignac number, because 6543430454043 - 2⁶ = 6543430453979 is a prime.

It is a super-2 number, since 2×6543430454043² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6543430454043.

It is not an unprimeable number, because it can be changed into a prime (6543430454843) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1449421 + ... + 3897137.

It is an arithmetic number, because the mean of its divisors is an integer number (450088017652).

Almost surely, 2^{6543430454043} is an apocalyptic number.

6543430454043 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

6543430454043 is a deficient number, since it is larger than the sum of its proper divisors (4258681969605).

6543430454043 is a wasteful number, since it uses less digits than its factorization.

6543430454043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2490163 (or 2490160 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 45.

Adding to 6543430454043 its reverse (3404540343456), we get a palindrome (9947970797499).

The spelling of 6543430454043 in words is "six trillion, five hundred forty-three billion, four hundred thirty million, four hundred fifty-four thousand, forty-three".