83845089637 has 2 divisors, whose sum is σ = 83845089638. Its totient is φ = 83845089636.

The previous prime is 83845089631. The next prime is 83845089661. The reversal of 83845089637 is 73698054838.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70518926916 + 13326162721 = 265554^2 + 115439^2 .

It is a cyclic number.

It is not a de Polignac number, because 83845089637 - 2⁷ = 83845089509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83845089631) 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, 41922544818 + 41922544819.

It is an arithmetic number, because the mean of its divisors is an integer number (41922544819).

Almost surely, 2^83845089637 is an apocalyptic number.

It is an amenable number.

83845089637 is a deficient number, since it is larger than the sum of its proper divisors (1).

83845089637 is an equidigital number, since it uses as much as digits as its factorization.

83845089637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34836480, while the sum is 61.

The spelling of 83845089637 in words is "eighty-three billion, eight hundred forty-five million, eighty-nine thousand, six hundred thirty-seven".