63421246443543 has 16 divisors (see below), whose sum is σ = 85129385058816. Its totient is φ = 41997020133600.

The previous prime is 63421246443491. The next prime is 63421246443563. The reversal of 63421246443543 is 34534464212436.

It is not a de Polignac number, because 63421246443543 - 2⁸ = 63421246443287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63421246443563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1332396 + ... + 11340977.

It is an arithmetic number, because the mean of its divisors is an integer number (5320586566176).

Almost surely, 2^{63421246443543} is an apocalyptic number.

63421246443543 is a deficient number, since it is larger than the sum of its proper divisors (21708138615273).

63421246443543 is a wasteful number, since it uses less digits than its factorization.

63421246443543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12684574.

The product of its digits is 19906560, while the sum is 51.

The spelling of 63421246443543 in words is "sixty-three trillion, four hundred twenty-one billion, two hundred forty-six million, four hundred forty-three thousand, five hundred forty-three".