6421423841712 has 400 divisors, whose sum is σ = 21171337304832. Its totient is φ = 1859983741440.

The previous prime is 6421423841711. The next prime is 6421423841713. The reversal of 6421423841712 is 2171483241246.

6421423841712 is a `hidden beast` number, since 6 + 4 + 214 + 2 + 3 + 8 + 417 + 12 = 666.

It is an interprime number because it is at equal distance from previous prime (6421423841711) and next prime (6421423841713).

It is not an unprimeable number, because it can be changed into a prime (6421423841711) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 533467758 + ... + 533479794.

Almost surely, 2^{6421423841712} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6421423841712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10585668652416).

6421423841712 is an abundant number, since it is smaller than the sum of its proper divisors (14749913463120).

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

6421423841712 is a wasteful number, since it uses less digits than its factorization.

6421423841712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13718 (or 13703 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The spelling of 6421423841712 in words is "six trillion, four hundred twenty-one billion, four hundred twenty-three million, eight hundred forty-one thousand, seven hundred twelve".