83538117293 has 2 divisors, whose sum is σ = 83538117294. Its totient is φ = 83538117292.

The previous prime is 83538117253. The next prime is 83538117359. The reversal of 83538117293 is 39271183538.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67266053449 + 16272063844 = 259357^2 + 127562^2 .

It is a cyclic number.

It is not a de Polignac number, because 83538117293 - 2⁸ = 83538117037 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83538117253) 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, 41769058646 + 41769058647.

It is an arithmetic number, because the mean of its divisors is an integer number (41769058647).

Almost surely, 2^83538117293 is an apocalyptic number.

It is an amenable number.

83538117293 is a deficient number, since it is larger than the sum of its proper divisors (1).

83538117293 is an equidigital number, since it uses as much as digits as its factorization.

83538117293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 50.

The spelling of 83538117293 in words is "eighty-three billion, five hundred thirty-eight million, one hundred seventeen thousand, two hundred ninety-three".