13320361681 has 8 divisors (see below), whose sum is σ = 14532657984. Its totient is φ = 12108291120.

The previous prime is 13320361661. The next prime is 13320361699. The reversal of 13320361681 is 18616302331.

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 13320361681 - 2⁷ = 13320361553 is a prime.

It is a super-2 number, since 2×13320361681² (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 (13320361631) 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, 81651 + ... + 182503.

It is an arithmetic number, because the mean of its divisors is an integer number (1816582248).

Almost surely, 2^13320361681 is an apocalyptic number.

13320361681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13320361681 is a deficient number, since it is larger than the sum of its proper divisors (1212296303).

13320361681 is a wasteful number, since it uses less digits than its factorization.

13320361681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112871.

The product of its (nonzero) digits is 15552, while the sum is 34.

The spelling of 13320361681 in words is "thirteen billion, three hundred twenty million, three hundred sixty-one thousand, six hundred eighty-one".