83142858221 has 2 divisors, whose sum is σ = 83142858222. Its totient is φ = 83142858220.

The previous prime is 83142858209. The next prime is 83142858241. The reversal of 83142858221 is 12285824138.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68746218025 + 14396640196 = 262195^2 + 119986^2 .

It is a cyclic number.

It is not a de Polignac number, because 83142858221 - 2²² = 83138663917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83142858241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41571429110 + 41571429111.

It is an arithmetic number, because the mean of its divisors is an integer number (41571429111).

Almost surely, 2^83142858221 is an apocalyptic number.

It is an amenable number.

83142858221 is a deficient number, since it is larger than the sum of its proper divisors (1).

83142858221 is an equidigital number, since it uses as much as digits as its factorization.

83142858221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 245760, while the sum is 44.

The spelling of 83142858221 in words is "eighty-three billion, one hundred forty-two million, eight hundred fifty-eight thousand, two hundred twenty-one".