83609421001 has 2 divisors, whose sum is σ = 83609421002. Its totient is φ = 83609421000.

The previous prime is 83609420989. The next prime is 83609421073. The reversal of 83609421001 is 10012490638.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63794635776 + 19814785225 = 252576^2 + 140765^2 .

It is a cyclic number.

It is not a de Polignac number, because 83609421001 - 2²³ = 83601032393 is a prime.

It is not a weakly prime, because it can be changed into another prime (83609421101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41804710500 + 41804710501.

It is an arithmetic number, because the mean of its divisors is an integer number (41804710501).

Almost surely, 2^83609421001 is an apocalyptic number.

It is an amenable number.

83609421001 is a deficient number, since it is larger than the sum of its proper divisors (1).

83609421001 is an equidigital number, since it uses as much as digits as its factorization.

83609421001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 34.

The spelling of 83609421001 in words is "eighty-three billion, six hundred nine million, four hundred twenty-one thousand, one".