8791739608789 has 2 divisors, whose sum is σ = 8791739608790. Its totient is φ = 8791739608788.

The previous prime is 8791739608721. The next prime is 8791739608801. The reversal of 8791739608789 is 9878069371978.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7138290810564 + 1653448798225 = 2671758^2 + 1285865^2 .

It is a cyclic number.

It is not a de Polignac number, because 8791739608789 - 2¹⁹ = 8791739084501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8791739608489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4395869804394 + 4395869804395.

It is an arithmetic number, because the mean of its divisors is an integer number (4395869804395).

Almost surely, 2^{8791739608789} is an apocalyptic number.

It is an amenable number.

8791739608789 is a deficient number, since it is larger than the sum of its proper divisors (1).

8791739608789 is an equidigital number, since it uses as much as digits as its factorization.

8791739608789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304433152, while the sum is 82.

The spelling of 8791739608789 in words is "eight trillion, seven hundred ninety-one billion, seven hundred thirty-nine million, six hundred eight thousand, seven hundred eighty-nine".