8280583775621 has 2 divisors, whose sum is σ = 8280583775622. Its totient is φ = 8280583775620.

The previous prime is 8280583775609. The next prime is 8280583775669. The reversal of 8280583775621 is 1265773850828.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6362067914596 + 1918515861025 = 2522314^2 + 1385105^2 .

It is a cyclic number.

It is not a de Polignac number, because 8280583775621 - 2¹⁴ = 8280583759237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8280583775921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4140291887810 + 4140291887811.

It is an arithmetic number, because the mean of its divisors is an integer number (4140291887811).

Almost surely, 2^{8280583775621} is an apocalyptic number.

It is an amenable number.

8280583775621 is a deficient number, since it is larger than the sum of its proper divisors (1).

8280583775621 is an equidigital number, since it uses as much as digits as its factorization.

8280583775621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45158400, while the sum is 62.

The spelling of 8280583775621 in words is "eight trillion, two hundred eighty billion, five hundred eighty-three million, seven hundred seventy-five thousand, six hundred twenty-one".