13173756607489 has 3 divisors (see below), whose sum is σ = 13173760237057. Its totient is φ = 13173752977922.

The previous prime is 13173756607469. The next prime is 13173756607493. The reversal of 13173756607489 is 98470665737131.

The square root of 13173756607489 is 3629567.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 13173756607489 - 2¹¹ = 13173756605441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13173756607469) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1814784 + ... + 5444350.

Almost surely, 2^{13173756607489} is an apocalyptic number.

13173756607489 is the 3629567-th square number.

13173756607489 is the 1814784-th centered octagonal number.

It is an amenable number.

13173756607489 is a deficient number, since it is larger than the sum of its proper divisors (3629568).

13173756607489 is an frugal number, since it uses more digits than its factorization.

13173756607489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7259134 (or 3629567 counting only the distinct ones).

The product of its (nonzero) digits is 160030080, while the sum is 67.

The spelling of 13173756607489 in words is "thirteen trillion, one hundred seventy-three billion, seven hundred fifty-six million, six hundred seven thousand, four hundred eighty-nine".