13257569450 has 24 divisors (see below), whose sum is σ = 24662569932. Its totient is φ = 5302277120.

The previous prime is 13257569293. The next prime is 13257569471. The reversal of 13257569450 is 5496575231.

13257569450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 1210970401 + 12046599049 = 34799^2 + 109757^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13257569395 and 13257569404.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 457802 + ... + 485898.

Almost surely, 2^13257569450 is an apocalyptic number.

13257569450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13257569450 is a deficient number, since it is larger than the sum of its proper divisors (11405000482).

13257569450 is a wasteful number, since it uses less digits than its factorization.

13257569450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37546 (or 37541 counting only the distinct ones).

The product of its (nonzero) digits is 1134000, while the sum is 47.

The spelling of 13257569450 in words is "thirteen billion, two hundred fifty-seven million, five hundred sixty-nine thousand, four hundred fifty".