1324520005145 has 4 divisors (see below), whose sum is σ = 1589424006180. Its totient is φ = 1059616004112.

The previous prime is 1324520005141. The next prime is 1324520005147. The reversal of 1324520005145 is 5415000254231.

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 363390746761 + 961129258384 = 602819^2 + 980372^2 .

It is a cyclic number.

It is not a de Polignac number, because 1324520005145 - 2² = 1324520005141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1324520005141) 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, 132452000510 + ... + 132452000519.

It is an arithmetic number, because the mean of its divisors is an integer number (397356001545).

Almost surely, 2^{1324520005145} is an apocalyptic number.

It is an amenable number.

1324520005145 is a deficient number, since it is larger than the sum of its proper divisors (264904001035).

1324520005145 is an equidigital number, since it uses as much as digits as its factorization.

1324520005145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264904001034.

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 1324520005145 its reverse (5415000254231), we get a palindrome (6739520259376).

The spelling of 1324520005145 in words is "one trillion, three hundred twenty-four billion, five hundred twenty million, five thousand, one hundred forty-five".