13284637081 has 3 divisors (see below), whose sum is σ = 13284752341. Its totient is φ = 13284521822.

The previous prime is 13284637043. The next prime is 13284637087. The reversal of 13284637081 is 18073648231.

The square root of 13284637081 is 115259.

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, and also an emirpimes, since its reverse is a distinct semiprime: 18073648231 = 241 ⋅74994391.

It is not a de Polignac number, because 13284637081 - 2⁹ = 13284636569 is a prime.

It is a super-2 number, since 2×13284637081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13284637087) 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, 57630 + ... + 172888.

Almost surely, 2^13284637081 is an apocalyptic number.

13284637081 is the 115259-th square number.

13284637081 is the 57630-th centered octagonal number.

It is an amenable number.

13284637081 is a deficient number, since it is larger than the sum of its proper divisors (115260).

13284637081 is an frugal number, since it uses more digits than its factorization.

13284637081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230518 (or 115259 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 13284637081 in words is "thirteen billion, two hundred eighty-four million, six hundred thirty-seven thousand, eighty-one".