7808712052109 has 4 divisors (see below), whose sum is σ = 7836902348604. Its totient is φ = 7780521755616.

The previous prime is 7808712052103. The next prime is 7808712052117. The reversal of 7808712052109 is 9012502178087.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 617717402500 + 7190994649609 = 785950^2 + 2681603^2 .

It is a cyclic number.

It is not a de Polignac number, because 7808712052109 - 2⁸ = 7808712051853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7808712052103) 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 3 ways as a sum of consecutive naturals, for example, 14095147832 + ... + 14095148385.

It is an arithmetic number, because the mean of its divisors is an integer number (1959225587151).

Almost surely, 2^{7808712052109} is an apocalyptic number.

It is an amenable number.

7808712052109 is a deficient number, since it is larger than the sum of its proper divisors (28190296495).

7808712052109 is a wasteful number, since it uses less digits than its factorization.

7808712052109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28190296494.

The product of its (nonzero) digits is 564480, while the sum is 50.

The spelling of 7808712052109 in words is "seven trillion, eight hundred eight billion, seven hundred twelve million, fifty-two thousand, one hundred nine".