8821604265797 has 2 divisors, whose sum is σ = 8821604265798. Its totient is φ = 8821604265796.

The previous prime is 8821604265769. The next prime is 8821604265839. The reversal of 8821604265797 is 7975624061288.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8817965884036 + 3638381761 = 2969506^2 + 60319^2 .

It is a cyclic number.

It is not a de Polignac number, because 8821604265797 - 2²⁶ = 8821537156933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8821604261797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4410802132898 + 4410802132899.

It is an arithmetic number, because the mean of its divisors is an integer number (4410802132899).

Almost surely, 2^{8821604265797} is an apocalyptic number.

It is an amenable number.

8821604265797 is a deficient number, since it is larger than the sum of its proper divisors (1).

8821604265797 is an equidigital number, since it uses as much as digits as its factorization.

8821604265797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81285120, while the sum is 65.

The spelling of 8821604265797 in words is "eight trillion, eight hundred twenty-one billion, six hundred four million, two hundred sixty-five thousand, seven hundred ninety-seven".