8791340220049 has 2 divisors, whose sum is σ = 8791340220050. Its totient is φ = 8791340220048.

The previous prime is 8791340220029. The next prime is 8791340220079. The reversal of 8791340220049 is 9400220431978.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8659130169600 + 132210050449 = 2942640^2 + 363607^2 .

It is a cyclic number.

It is not a de Polignac number, because 8791340220049 - 2⁹ = 8791340219537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8791340219984 and 8791340220011.

It is not a weakly prime, because it can be changed into another prime (8791340220029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4395670110024 + 4395670110025.

It is an arithmetic number, because the mean of its divisors is an integer number (4395670110025).

Almost surely, 2^{8791340220049} is an apocalyptic number.

It is an amenable number.

8791340220049 is a deficient number, since it is larger than the sum of its proper divisors (1).

8791340220049 is an equidigital number, since it uses as much as digits as its factorization.

8791340220049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 8791340220049 in words is "eight trillion, seven hundred ninety-one billion, three hundred forty million, two hundred twenty thousand, forty-nine".