13393691281 has 8 divisors (see below), whose sum is σ = 14203486080. Its totient is φ = 12586333248.

The previous prime is 13393691263. The next prime is 13393691291. The reversal of 13393691281 is 18219639331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13393691281 - 2¹⁵ = 13393658513 is a prime.

It is a super-2 number, since 2×13393691281² (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 (13393691251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 597861 + ... + 619858.

It is an arithmetic number, because the mean of its divisors is an integer number (1775435760).

Almost surely, 2^13393691281 is an apocalyptic number.

It is an amenable number.

13393691281 is a deficient number, since it is larger than the sum of its proper divisors (809794799).

13393691281 is a wasteful number, since it uses less digits than its factorization.

13393691281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218383.

The product of its digits is 209952, while the sum is 46.

The spelling of 13393691281 in words is "thirteen billion, three hundred ninety-three million, six hundred ninety-one thousand, two hundred eighty-one".