8079078869681 has 16 divisors (see below), whose sum is σ = 8129436825600. Its totient is φ = 8028870189648.

The previous prime is 8079078869677. The next prime is 8079078869737. The reversal of 8079078869681 is 1869688709708.

It is a cyclic number.

It is not a de Polignac number, because 8079078869681 - 2² = 8079078869677 is a prime.

It is a super-2 number, since 2×8079078869681² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8079078869671) 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, 393956630 + ... + 393977136.

It is an arithmetic number, because the mean of its divisors is an integer number (508089801600).

Almost surely, 2^{8079078869681} is an apocalyptic number.

It is an amenable number.

8079078869681 is a deficient number, since it is larger than the sum of its proper divisors (50357955919).

8079078869681 is a wasteful number, since it uses less digits than its factorization.

8079078869681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24028.

The product of its (nonzero) digits is 585252864, while the sum is 77.

The spelling of 8079078869681 in words is "eight trillion, seventy-nine billion, seventy-eight million, eight hundred sixty-nine thousand, six hundred eighty-one".