6421730805600 has 288 divisors, whose sum is σ = 23794418559744. Its totient is φ = 1489096857600.

The previous prime is 6421730805563. The next prime is 6421730805601. The reversal of 6421730805600 is 65080371246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6421730805601) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4680787 + ... + 5895186.

It is an arithmetic number, because the mean of its divisors is an integer number (82619508888).

Almost surely, 2^{6421730805600} is an apocalyptic number.

6421730805600 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6421730805600 is an abundant number, since it is smaller than the sum of its proper divisors (17372687754144).

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

6421730805600 is a wasteful number, since it uses less digits than its factorization.

6421730805600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10576030 (or 10576017 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 6421730805600 in words is "six trillion, four hundred twenty-one billion, seven hundred thirty million, eight hundred five thousand, six hundred".