83922561409 has 2 divisors, whose sum is σ = 83922561410. Its totient is φ = 83922561408.

The previous prime is 83922561379. The next prime is 83922561427. The reversal of 83922561409 is 90416522938.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78008490000 + 5914071409 = 279300^2 + 76903^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83922561409 is a prime.

It is not a weakly prime, because it can be changed into another prime (83922561439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41961280704 + 41961280705.

It is an arithmetic number, because the mean of its divisors is an integer number (41961280705).

Almost surely, 2^83922561409 is an apocalyptic number.

It is an amenable number.

83922561409 is a deficient number, since it is larger than the sum of its proper divisors (1).

83922561409 is an equidigital number, since it uses as much as digits as its factorization.

83922561409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 83922561409 in words is "eighty-three billion, nine hundred twenty-two million, five hundred sixty-one thousand, four hundred nine".