13073864281 has 9 divisors (see below), whose sum is σ = 13207498941. Its totient is φ = 12941571744.

The previous prime is 13073864273. The next prime is 13073864291. The reversal of 13073864281 is 18246837031.

The square root of 13073864281 is 114341.

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

It can be written as a sum of positive squares in 4 ways, for example, as 5142180681 + 7931683600 = 71709^2 + 89060^2 .

It is not a de Polignac number, because 13073864281 - 2³ = 13073864273 is a prime.

It is a super-2 number, since 2×13073864281² (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 (13073864201) 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, 12462645 + ... + 12463693.

Almost surely, 2^13073864281 is an apocalyptic number.

13073864281 is the 114341-st square number.

13073864281 is the 57171-st centered octagonal number.

It is an amenable number.

13073864281 is a deficient number, since it is larger than the sum of its proper divisors (133634660).

13073864281 is an frugal number, since it uses more digits than its factorization.

13073864281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2316 (or 1158 counting only the distinct ones).

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

The spelling of 13073864281 in words is "thirteen billion, seventy-three million, eight hundred sixty-four thousand, two hundred eighty-one".