4544394446880 has 384 divisors, whose sum is σ = 16055158210560. Its totient is φ = 1200456391680.

The previous prime is 4544394446821. The next prime is 4544394446899. The reversal of 4544394446880 is 886444934454.

4544394446880 is a `hidden beast` number, since 4 + 5 + 4 + 4 + 3 + 94 + 4 + 468 + 80 = 666.

It is a super-2 number, since 2×4544394446880² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 379104247 + ... + 379116233.

It is an arithmetic number, because the mean of its divisors is an integer number (41810307840).

Almost surely, 2^{4544394446880} is an apocalyptic number.

4544394446880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4544394446880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8027579105280).

4544394446880 is an abundant number, since it is smaller than the sum of its proper divisors (11510763763680).

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

4544394446880 is a wasteful number, since it uses less digits than its factorization.

4544394446880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12829 (or 12815 counting only the distinct ones).

The product of its (nonzero) digits is 212336640, while the sum is 63.

The spelling of 4544394446880 in words is "four trillion, five hundred forty-four billion, three hundred ninety-four million, four hundred forty-six thousand, eight hundred eighty".