13578745205 has 8 divisors (see below), whose sum is σ = 16304631000. Its totient is φ = 10856238336.

The previous prime is 13578745183. The next prime is 13578745207. The reversal of 13578745205 is 50254787531.

It can be written as a sum of positive squares in 4 ways, for example, as 2911573681 + 10667171524 = 53959^2 + 103282^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13578745205 - 2¹⁰ = 13578744181 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13578745205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13578745207) 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 7 ways as a sum of consecutive naturals, for example, 835880 + ... + 851969.

It is an arithmetic number, because the mean of its divisors is an integer number (2038078875).

Almost surely, 2^13578745205 is an apocalyptic number.

It is an amenable number.

13578745205 is a deficient number, since it is larger than the sum of its proper divisors (2725885795).

13578745205 is a wasteful number, since it uses less digits than its factorization.

13578745205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1689463.

The product of its (nonzero) digits is 1176000, while the sum is 47.

The spelling of 13578745205 in words is "thirteen billion, five hundred seventy-eight million, seven hundred forty-five thousand, two hundred five".