13143764437489 has 9 divisors (see below), whose sum is σ = 15289714683417. Its totient is φ = 11266062050964.

The previous prime is 13143764437487. The next prime is 13143764437537. The reversal of 13143764437489 is 98473446734131.

The square root of 13143764437489 is 3625433.

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

13143764437489 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 13143764437489 - 2¹ = 13143764437487 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13143764437489.

It is not an unprimeable number, because it can be changed into a prime (13143764437481) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 25119072 + ... + 25636990.

Almost surely, 2^{13143764437489} is an apocalyptic number.

13143764437489 is the 3625433-rd square number.

13143764437489 is the 1812717-th centered octagonal number.

It is an amenable number.

13143764437489 is a deficient number, since it is larger than the sum of its proper divisors (2145950245928).

13143764437489 is an frugal number, since it uses more digits than its factorization.

13143764437489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035852 (or 517926 counting only the distinct ones).

The product of its digits is 146313216, while the sum is 64.

Multiplying 13143764437489 by its sum of digits (64), we get a square (841200923999296 = 29003464²).

The spelling of 13143764437489 in words is "thirteen trillion, one hundred forty-three billion, seven hundred sixty-four million, four hundred thirty-seven thousand, four hundred eighty-nine".