6443821435542 has 8 divisors (see below), whose sum is σ = 12887642871096. Its totient is φ = 2147940478512.

The previous prime is 6443821435531. The next prime is 6443821435549. The reversal of 6443821435542 is 2455341283446.

It is a sphenic number, since it is the product of 3 distinct primes.

6443821435542 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6443821435549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 536985119623 + ... + 536985119634.

It is an arithmetic number, because the mean of its divisors is an integer number (1610955358887).

Almost surely, 2^{6443821435542} is an apocalyptic number.

6443821435542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6443821435542 is a wasteful number, since it uses less digits than its factorization.

6443821435542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073970239262.

The product of its digits is 11059200, while the sum is 51.

The spelling of 6443821435542 in words is "six trillion, four hundred forty-three billion, eight hundred twenty-one million, four hundred thirty-five thousand, five hundred forty-two".