1352445257173 has 4 divisors (see below), whose sum is σ = 1377963092268. Its totient is φ = 1326927422080.

The previous prime is 1352445257159. The next prime is 1352445257183. The reversal of 1352445257173 is 3717525442531.

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 1082251137969 + 270194119204 = 1040313^2 + 519802^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1352445257173 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1352445257113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12758917468 + ... + 12758917573.

It is an arithmetic number, because the mean of its divisors is an integer number (344490773067).

Almost surely, 2^{1352445257173} is an apocalyptic number.

It is an amenable number.

1352445257173 is a deficient number, since it is larger than the sum of its proper divisors (25517835095).

1352445257173 is an equidigital number, since it uses as much as digits as its factorization.

1352445257173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25517835094.

The product of its digits is 3528000, while the sum is 49.

The spelling of 1352445257173 in words is "one trillion, three hundred fifty-two billion, four hundred forty-five million, two hundred fifty-seven thousand, one hundred seventy-three".