1445456511613 has 4 divisors (see below), whose sum is σ = 1445459624860. Its totient is φ = 1445453398368.

The previous prime is 1445456511593. The next prime is 1445456511619. The reversal of 1445456511613 is 3161156545441.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1079234255044 + 366222256569 = 1038862^2 + 605163^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1445456511613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445456511619) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 704808 + ... + 1840561.

It is an arithmetic number, because the mean of its divisors is an integer number (361364906215).

Almost surely, 2^{1445456511613} is an apocalyptic number.

It is an amenable number.

1445456511613 is a deficient number, since it is larger than the sum of its proper divisors (3113247).

1445456511613 is an equidigital number, since it uses as much as digits as its factorization.

1445456511613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3113246.

The product of its digits is 864000, while the sum is 46.

The spelling of 1445456511613 in words is "one trillion, four hundred forty-five billion, four hundred fifty-six million, five hundred eleven thousand, six hundred thirteen".