13001081681 has 16 divisors (see below), whose sum is σ = 15014243328. Its totient is φ = 11027016000.

The previous prime is 13001081663. The next prime is 13001081693. The reversal of 13001081681 is 18618010031.

It is not a de Polignac number, because 13001081681 - 2²² = 12996887377 is a prime.

It is a super-2 number, since 2×13001081681² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13001081651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1510811 + ... + 1519391.

It is an arithmetic number, because the mean of its divisors is an integer number (938390208).

Almost surely, 2^13001081681 is an apocalyptic number.

It is an amenable number.

13001081681 is a deficient number, since it is larger than the sum of its proper divisors (2013161647).

13001081681 is a wasteful number, since it uses less digits than its factorization.

13001081681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10832.

The product of its (nonzero) digits is 1152, while the sum is 29.

The spelling of 13001081681 in words is "thirteen billion, one million, eighty-one thousand, six hundred eighty-one".