444660140543520 has 192 divisors, whose sum is σ = 1528213011131520. Its totient is φ = 107782353715200.

The previous prime is 444660140543519. The next prime is 444660140543533. The reversal of 444660140543520 is 25345041066444.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 444660140543520.

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 31 ways as a sum of consecutive naturals, for example, 35073586 + ... + 46037774.

It is an arithmetic number, because the mean of its divisors is an integer number (7959442766310).

Almost surely, 2^{444660140543520} is an apocalyptic number.

444660140543520 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 444660140543520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (764106505565760).

444660140543520 is an abundant number, since it is smaller than the sum of its proper divisors (1083552870588000).

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

444660140543520 is a wasteful number, since it uses less digits than its factorization.

444660140543520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10971899 (or 10971891 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 48.

The spelling of 444660140543520 in words is "four hundred forty-four trillion, six hundred sixty billion, one hundred forty million, five hundred forty-three thousand, five hundred twenty".