1445277626809 has 9 divisors (see below), whose sum is σ = 1453038182253. Its totient is φ = 1437558319872.

The previous prime is 1445277626803. The next prime is 1445277626833. The reversal of 1445277626809 is 9086267725441.

The square root of 1445277626809 is 1202197.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 99278557225 + 1345999069584 = 315085^2 + 1160172^2 .

It is not a de Polignac number, because 1445277626809 - 2¹¹ = 1445277624761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1445277626803) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 232020907 + ... + 232027135.

It is an arithmetic number, because the mean of its divisors is an integer number (161448686917).

Almost surely, 2^{1445277626809} is an apocalyptic number.

1445277626809 is the 1202197-th square number.

1445277626809 is the 601099-th centered octagonal number.

It is an amenable number.

1445277626809 is a deficient number, since it is larger than the sum of its proper divisors (7760555444).

1445277626809 is an frugal number, since it uses more digits than its factorization.

1445277626809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12844 (or 6422 counting only the distinct ones).

The product of its (nonzero) digits is 40642560, while the sum is 61.

The spelling of 1445277626809 in words is "one trillion, four hundred forty-five billion, two hundred seventy-seven million, six hundred twenty-six thousand, eight hundred nine".