8790593961221 has 2 divisors, whose sum is σ = 8790593961222. Its totient is φ = 8790593961220.

The previous prime is 8790593961161. The next prime is 8790593961239. The reversal of 8790593961221 is 1221693950978.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5340235701025 + 3450358260196 = 2310895^2 + 1857514^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8790593961221 is a prime.

It is a super-3 number, since 3×8790593961221³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8790593961241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4395296980610 + 4395296980611.

It is an arithmetic number, because the mean of its divisors is an integer number (4395296980611).

Almost surely, 2^{8790593961221} is an apocalyptic number.

It is an amenable number.

8790593961221 is a deficient number, since it is larger than the sum of its proper divisors (1).

8790593961221 is an equidigital number, since it uses as much as digits as its factorization.

8790593961221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14696640, while the sum is 62.

The spelling of 8790593961221 in words is "eight trillion, seven hundred ninety billion, five hundred ninety-three million, nine hundred sixty-one thousand, two hundred twenty-one".