807668539081 has 4 divisors (see below), whose sum is σ = 815509981312. Its totient is φ = 799827096852.

The previous prime is 807668538983. The next prime is 807668539121. The reversal of 807668539081 is 180935866708.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 807668539081 - 2²¹ = 807666441929 is a prime.

It is a super-2 number, since 2×807668539081² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (807668539781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3920720961 + ... + 3920721166.

It is an arithmetic number, because the mean of its divisors is an integer number (203877495328).

Almost surely, 2^807668539081 is an apocalyptic number.

It is an amenable number.

807668539081 is a deficient number, since it is larger than the sum of its proper divisors (7841442231).

807668539081 is a wasteful number, since it uses less digits than its factorization.

807668539081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7841442230.

The product of its (nonzero) digits is 17418240, while the sum is 61.

The spelling of 807668539081 in words is "eight hundred seven billion, six hundred sixty-eight million, five hundred thirty-nine thousand, eighty-one".