13399706881 has 8 divisors (see below), whose sum is σ = 14732964864. Its totient is φ = 12085632720.

The previous prime is 13399706857. The next prime is 13399706963. The reversal of 13399706881 is 18860799331.

13399706881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 13399706881 - 2⁵ = 13399706849 is a prime.

It is a super-2 number, since 2×13399706881² (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 (13399706081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4794490 + ... + 4797283.

It is an arithmetic number, because the mean of its divisors is an integer number (1841620608).

Almost surely, 2^13399706881 is an apocalyptic number.

13399706881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13399706881 is a deficient number, since it is larger than the sum of its proper divisors (1333257983).

13399706881 is a wasteful number, since it uses less digits than its factorization.

13399706881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9591911.

The product of its (nonzero) digits is 1959552, while the sum is 55.

The spelling of 13399706881 in words is "thirteen billion, three hundred ninety-nine million, seven hundred six thousand, eight hundred eighty-one".