6421113764912 has 640 divisors, whose sum is σ = 17438723850240. Its totient is φ = 2213972766720.

The previous prime is 6421113764881. The next prime is 6421113764951. The reversal of 6421113764912 is 2194673111246.

It is an unprimeable number.

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 127 ways as a sum of consecutive naturals, for example, 8760045698 + ... + 8760046430.

It is an arithmetic number, because the mean of its divisors is an integer number (27248006016).

Almost surely, 2^{6421113764912} 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 6421113764912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8719361925120).

6421113764912 is an abundant number, since it is smaller than the sum of its proper divisors (11017610085328).

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

6421113764912 is a wasteful number, since it uses less digits than its factorization.

6421113764912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161 (or 1155 counting only the distinct ones).

The product of its digits is 435456, while the sum is 47.

The spelling of 6421113764912 in words is "six trillion, four hundred twenty-one billion, one hundred thirteen million, seven hundred sixty-four thousand, nine hundred twelve".