6421061248 has 256 divisors, whose sum is σ = 16607232000. Its totient is φ = 2413255680.

The previous prime is 6421061201. The next prime is 6421061261. The reversal of 6421061248 is 8421601246.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 207130993 + ... + 207131023.

It is an arithmetic number, because the mean of its divisors is an integer number (64872000).

Almost surely, 2^6421061248 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 6421061248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8303616000).

6421061248 is an abundant number, since it is smaller than the sum of its proper divisors (10186170752).

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

6421061248 is an equidigital number, since it uses as much as digits as its factorization.

6421061248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 6421061248 is about 80131.5246828612. The cubic root of 6421061248 is about 1858.6699212551.

The spelling of 6421061248 in words is "six billion, four hundred twenty-one million, sixty-one thousand, two hundred forty-eight".