1445444043440 has 40 divisors (see below), whose sum is σ = 3360743679888. Its totient is φ = 578162773760.

The previous prime is 1445444043371. The next prime is 1445444043457. The reversal of 1445444043440 is 443404445441.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3223370 + ... + 3644310.

Almost surely, 2^{1445444043440} is an apocalyptic number.

1445444043440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1445444043440 is an abundant number, since it is smaller than the sum of its proper divisors (1915299636448).

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

1445444043440 is a wasteful number, since it uses less digits than its factorization.

1445444043440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463877 (or 463871 counting only the distinct ones).

The product of its (nonzero) digits is 983040, while the sum is 41.

Adding to 1445444043440 its reverse (443404445441), we get a palindrome (1888848488881).

The spelling of 1445444043440 in words is "one trillion, four hundred forty-five billion, four hundred forty-four million, forty-three thousand, four hundred forty".