4445243566240 has 48 divisors (see below), whose sum is σ = 10511461620072. Its totient is φ = 1776476483584.

The previous prime is 4445243566217. The next prime is 4445243566297. The reversal of 4445243566240 is 426653425444.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2824134026256 + 1621109539984 = 1680516^2 + 1273228^2 .

It is a super-2 number, since 2×4445243566240² (a number of 26 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 12487549 + ... + 12838588.

Almost surely, 2^{4445243566240} is an apocalyptic number.

4445243566240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4445243566240 is an abundant number, since it is smaller than the sum of its proper divisors (6066218053832).

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

4445243566240 is a wasteful number, since it uses less digits than its factorization.

4445243566240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25327249 (or 25327241 counting only the distinct ones).

The product of its (nonzero) digits is 11059200, while the sum is 49.

The spelling of 4445243566240 in words is "four trillion, four hundred forty-five billion, two hundred forty-three million, five hundred sixty-six thousand, two hundred forty".