13443500253 has 16 divisors (see below), whose sum is σ = 18827882496. Its totient is φ = 8515887600.

The previous prime is 13443500251. The next prime is 13443500267. The reversal of 13443500253 is 35200534431.

It is not a de Polignac number, because 13443500253 - 2¹ = 13443500251 is a prime.

It is a super-2 number, since 2×13443500253² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13443500253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13443500251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 634725 + ... + 655562.

It is an arithmetic number, because the mean of its divisors is an integer number (1176742656).

Almost surely, 2^13443500253 is an apocalyptic number.

It is an amenable number.

13443500253 is a deficient number, since it is larger than the sum of its proper divisors (5384382243).

13443500253 is a wasteful number, since it uses less digits than its factorization.

13443500253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290464.

The product of its (nonzero) digits is 21600, while the sum is 30.

The spelling of 13443500253 in words is "thirteen billion, four hundred forty-three million, five hundred thousand, two hundred fifty-three".