8103505681 has 8 divisors (see below), whose sum is σ = 8532208800. Its totient is φ = 7675022880.

The previous prime is 8103505667. The next prime is 8103505687. The reversal of 8103505681 is 1865053018.

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 8103505681 - 2¹³ = 8103497489 is a prime.

It is a super-2 number, since 2×8103505681² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8103505681.

It is not an unprimeable number, because it can be changed into a prime (8103505687) 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, 23301 + ... + 129421.

It is an arithmetic number, because the mean of its divisors is an integer number (1066526100).

Almost surely, 2^8103505681 is an apocalyptic number.

It is an amenable number.

8103505681 is a deficient number, since it is larger than the sum of its proper divisors (428703119).

8103505681 is a wasteful number, since it uses less digits than its factorization.

8103505681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110159.

The product of its (nonzero) digits is 28800, while the sum is 37.

The square root of 8103505681 is about 90019.4738987071. The cubic root of 8103505681 is about 2008.5885391215.

Adding to 8103505681 its reverse (1865053018), we get a palindrome (9968558699).

The spelling of 8103505681 in words is "eight billion, one hundred three million, five hundred five thousand, six hundred eighty-one".