13261716281 has 12 divisors (see below), whose sum is σ = 14718465216. Its totient is φ = 11939044920.

The previous prime is 13261716241. The next prime is 13261716283. The reversal of 13261716281 is 18261716231.

It is not a de Polignac number, because 13261716281 - 2⁶ = 13261716217 is a prime.

It is a super-2 number, since 2×13261716281² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13261716283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 519581 + ... + 544506.

It is an arithmetic number, because the mean of its divisors is an integer number (1226538768).

Almost surely, 2^13261716281 is an apocalyptic number.

13261716281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13261716281 is a deficient number, since it is larger than the sum of its proper divisors (1456748935).

13261716281 is a wasteful number, since it uses less digits than its factorization.

13261716281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064212 (or 1064201 counting only the distinct ones).

The product of its digits is 24192, while the sum is 38.

The spelling of 13261716281 in words is "thirteen billion, two hundred sixty-one million, seven hundred sixteen thousand, two hundred eighty-one".