1445456511505 has 4 divisors (see below), whose sum is σ = 1734547813812. Its totient is φ = 1156365209200.

The previous prime is 1445456511439. The next prime is 1445456511553. The reversal of 1445456511505 is 5051156545441.

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 685463117329 + 759993394176 = 827927^2 + 871776^2 .

It is not a de Polignac number, because 1445456511505 - 2³⁵ = 1411096773137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144545651146 + ... + 144545651155.

It is an arithmetic number, because the mean of its divisors is an integer number (433636953453).

Almost surely, 2^{1445456511505} is an apocalyptic number.

It is an amenable number.

1445456511505 is a deficient number, since it is larger than the sum of its proper divisors (289091302307).

1445456511505 is an equidigital number, since it uses as much as digits as its factorization.

1445456511505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289091302306.

The product of its (nonzero) digits is 1200000, while the sum is 46.

The spelling of 1445456511505 in words is "one trillion, four hundred forty-five billion, four hundred fifty-six million, five hundred eleven thousand, five hundred five".