1445253542321 has 4 divisors (see below), whose sum is σ = 1445277996912. Its totient is φ = 1445229087732.

The previous prime is 1445253542303. The next prime is 1445253542329. The reversal of 1445253542321 is 1232453525441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1445253542321 - 2¹⁰ = 1445253541297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1445253542329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12138431 + ... + 12256916.

It is an arithmetic number, because the mean of its divisors is an integer number (361319499228).

Almost surely, 2^{1445253542321} is an apocalyptic number.

It is an amenable number.

1445253542321 is a deficient number, since it is larger than the sum of its proper divisors (24454591).

1445253542321 is an equidigital number, since it uses as much as digits as its factorization.

1445253542321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24454590.

The product of its digits is 576000, while the sum is 41.

The spelling of 1445253542321 in words is "one trillion, four hundred forty-five billion, two hundred fifty-three million, five hundred forty-two thousand, three hundred twenty-one".