1513528640545 has 4 divisors (see below), whose sum is σ = 1816234368660. Its totient is φ = 1210822912432.

The previous prime is 1513528640539. The next prime is 1513528640549. The reversal of 1513528640545 is 5450468253151.

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 1174520565009 + 339008075536 = 1083753^2 + 582244^2 .

It is a cyclic number.

It is not a de Polignac number, because 1513528640545 - 2¹¹ = 1513528638497 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 not an unprimeable number, because it can be changed into a prime (1513528640549) 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, 151352864050 + ... + 151352864059.

It is an arithmetic number, because the mean of its divisors is an integer number (454058592165).

Almost surely, 2^{1513528640545} is an apocalyptic number.

It is an amenable number.

1513528640545 is a deficient number, since it is larger than the sum of its proper divisors (302705728115).

1513528640545 is an equidigital number, since it uses as much as digits as its factorization.

1513528640545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302705728114.

The product of its (nonzero) digits is 2880000, while the sum is 49.

The spelling of 1513528640545 in words is "one trillion, five hundred thirteen billion, five hundred twenty-eight million, six hundred forty thousand, five hundred forty-five".