83142221893 has 2 divisors, whose sum is σ = 83142221894. Its totient is φ = 83142221892.

The previous prime is 83142221879. The next prime is 83142221909. The reversal of 83142221893 is 39812224138.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51555335364 + 31586886529 = 227058^2 + 177727^2 .

It is a cyclic number.

It is not a de Polignac number, because 83142221893 - 2⁹ = 83142221381 is a prime.

It is a super-2 number, since 2×83142221893² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83142221863) 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, 41571110946 + 41571110947.

It is an arithmetic number, because the mean of its divisors is an integer number (41571110947).

Almost surely, 2^83142221893 is an apocalyptic number.

It is an amenable number.

83142221893 is a deficient number, since it is larger than the sum of its proper divisors (1).

83142221893 is an equidigital number, since it uses as much as digits as its factorization.

83142221893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165888, while the sum is 43.

The spelling of 83142221893 in words is "eighty-three billion, one hundred forty-two million, two hundred twenty-one thousand, eight hundred ninety-three".