8101113681 has 16 divisors (see below), whose sum is σ = 10841688000. Its totient is φ = 5380666368.

The previous prime is 8101113679. The next prime is 8101113737. The reversal of 8101113681 is 1863111018.

It is not a de Polignac number, because 8101113681 - 2¹ = 8101113679 is a prime.

It is a super-2 number, since 2×8101113681² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8101113611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1998745 + ... + 2002793.

It is an arithmetic number, because the mean of its divisors is an integer number (677605500).

Almost surely, 2^8101113681 is an apocalyptic number.

It is an amenable number.

8101113681 is a deficient number, since it is larger than the sum of its proper divisors (2740574319).

8101113681 is a wasteful number, since it uses less digits than its factorization.

8101113681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6368.

The product of its (nonzero) digits is 1152, while the sum is 30.

The square root of 8101113681 is about 90006.1869040123. The cubic root of 8101113681 is about 2008.3908873566.

Adding to 8101113681 its reverse (1863111018), we get a palindrome (9964224699).

The spelling of 8101113681 in words is "eight billion, one hundred one million, one hundred thirteen thousand, six hundred eighty-one".