13257910449 has 27 divisors (see below), whose sum is σ = 22280960793. Its totient is φ = 7574567112.

The previous prime is 13257910441. The next prime is 13257910451. The reversal of 13257910449 is 94401975231.

The square root of 13257910449 is 115143.

It is a perfect power (a square), and thus also a powerful number.

13257910449 is a `hidden beast` number, since 1 + 32 + 579 + 1 + 0 + 4 + 49 = 666.

13257910449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13257910449 - 2³ = 13257910441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13257910441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2415262 + ... + 2420744.

Almost surely, 2^13257910449 is an apocalyptic number.

13257910449 is the 115143-rd square number.

13257910449 is the 57572-nd centered octagonal number.

It is an amenable number.

13257910449 is a deficient number, since it is larger than the sum of its proper divisors (9023050344).

13257910449 is an frugal number, since it uses more digits than its factorization.

13257910449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10986 (or 5493 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 13257910449 in words is "thirteen billion, two hundred fifty-seven million, nine hundred ten thousand, four hundred forty-nine".