8858412495661 has 2 divisors, whose sum is σ = 8858412495662. Its totient is φ = 8858412495660.

The previous prime is 8858412495631. The next prime is 8858412495721. The reversal of 8858412495661 is 1665942148588.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8657982578025 + 200429917636 = 2942445^2 + 447694^2 .

It is a cyclic number.

It is not a de Polignac number, because 8858412495661 - 2¹¹ = 8858412493613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8858412495631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4429206247830 + 4429206247831.

It is an arithmetic number, because the mean of its divisors is an integer number (4429206247831).

Almost surely, 2^{8858412495661} is an apocalyptic number.

It is an amenable number.

8858412495661 is a deficient number, since it is larger than the sum of its proper divisors (1).

8858412495661 is an equidigital number, since it uses as much as digits as its factorization.

8858412495661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 132710400, while the sum is 67.

The spelling of 8858412495661 in words is "eight trillion, eight hundred fifty-eight billion, four hundred twelve million, four hundred ninety-five thousand, six hundred sixty-one".