1445328235440 has 120 divisors (see below), whose sum is σ = 4854136837680. Its totient is φ = 385401580032.

The previous prime is 1445328235427. The next prime is 1445328235441. The reversal of 1445328235440 is 445328235441.

1445328235440 is a `hidden beast` number, since 1 + 4 + 4 + 532 + 8 + 23 + 54 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1445328235441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19791634 + ... + 19864526.

It is an arithmetic number, because the mean of its divisors is an integer number (40451140314).

Almost surely, 2^{1445328235440} is an apocalyptic number.

1445328235440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1445328235440 is an abundant number, since it is smaller than the sum of its proper divisors (3408808602240).

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

1445328235440 is a wasteful number, since it uses less digits than its factorization.

1445328235440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100451 (or 100442 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 45.

Subtracting from 1445328235440 its reverse (445328235441), we obtain a palindrome (999999999999).

The spelling of 1445328235440 in words is "one trillion, four hundred forty-five billion, three hundred twenty-eight million, two hundred thirty-five thousand, four hundred forty".