8104807781 has 8 divisors (see below), whose sum is σ = 9665361024. Its totient is φ = 6644935440.

The previous prime is 8104807729. The next prime is 8104807807. The reversal of 8104807781 is 1877084018.

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 8104807781 - 2¹⁰ = 8104806757 is a prime.

It is a super-2 number, since 2×8104807781² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8104807481) 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, 25170050 + ... + 25170371.

It is an arithmetic number, because the mean of its divisors is an integer number (1208170128).

Almost surely, 2^8104807781 is an apocalyptic number.

It is an amenable number.

8104807781 is a deficient number, since it is larger than the sum of its proper divisors (1560553243).

8104807781 is a wasteful number, since it uses less digits than its factorization.

8104807781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50340451.

The product of its (nonzero) digits is 100352, while the sum is 44.

The square root of 8104807781 is about 90026.7059321844. The cubic root of 8104807781 is about 2008.6961157338.

The spelling of 8104807781 in words is "eight billion, one hundred four million, eight hundred seven thousand, seven hundred eighty-one".