12545204013 has 6 divisors (see below), whose sum is σ = 18120850254. Its totient is φ = 8363469336.

The previous prime is 12545204003. The next prime is 12545204117. The reversal of 12545204013 is 31040254521.

12545204013 is a `hidden beast` number, since 1 + 254 + 5 + 2 + 0 + 401 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8518920804 + 4026283209 = 92298^2 + 63453^2 .

It is not a de Polignac number, because 12545204013 - 2⁴ = 12545203997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12545204003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 696955770 + ... + 696955787.

It is an arithmetic number, because the mean of its divisors is an integer number (3020141709).

Almost surely, 2^12545204013 is an apocalyptic number.

It is an amenable number.

12545204013 is a deficient number, since it is larger than the sum of its proper divisors (5575646241).

12545204013 is a wasteful number, since it uses less digits than its factorization.

12545204013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1393911563 (or 1393911560 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 12545204013 its reverse (31040254521), we get a palindrome (43585458534).

The spelling of 12545204013 in words is "twelve billion, five hundred forty-five million, two hundred four thousand, thirteen".