4454021321536 has 112 divisors (see below), whose sum is σ = 9514258829712. Its totient is φ = 2061110476800.

The previous prime is 4454021321501. The next prime is 4454021321543. The reversal of 4454021321536 is 6351231204544.

It can be written as a sum of positive squares in 8 ways, for example, as 1181742926400 + 3272278395136 = 1087080^2 + 1808944^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 374375940 + ... + 374387836.

It is an arithmetic number, because the mean of its divisors is an integer number (84948739551).

Almost surely, 2^{4454021321536} 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 4454021321536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4757129414856).

4454021321536 is an abundant number, since it is smaller than the sum of its proper divisors (5060237508176).

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

4454021321536 is a wasteful number, since it uses less digits than its factorization.

4454021321536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17628 (or 17618 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 40.

The spelling of 4454021321536 in words is "four trillion, four hundred fifty-four billion, twenty-one million, three hundred twenty-one thousand, five hundred thirty-six".