1305445165153 has 12 divisors (see below), whose sum is σ = 1318228018380. Its totient is φ = 1292684660736.

The previous prime is 1305445165099. The next prime is 1305445165169. The reversal of 1305445165153 is 3515615445031.

It can be written as a sum of positive squares in 6 ways, for example, as 8105941089 + 1297339224064 = 90033^2 + 1139008^2 .

It is not a de Polignac number, because 1305445165153 - 2⁹ = 1305445164641 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 (1305445165183) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 527877925 + ... + 527880397.

It is an arithmetic number, because the mean of its divisors is an integer number (109852334865).

Almost surely, 2^{1305445165153} is an apocalyptic number.

It is an amenable number.

1305445165153 is a deficient number, since it is larger than the sum of its proper divisors (12782853227).

1305445165153 is an frugal number, since it uses more digits than its factorization.

1305445165153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6948 (or 4475 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 43.

The spelling of 1305445165153 in words is "one trillion, three hundred five billion, four hundred forty-five million, one hundred sixty-five thousand, one hundred fifty-three".