82917983893 has 2 divisors, whose sum is σ = 82917983894. Its totient is φ = 82917983892.

The previous prime is 82917983873. The next prime is 82917983899. The reversal of 82917983893 is 39838971928.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52689988849 + 30227995044 = 229543^2 + 173862^2 .

It is a cyclic number.

It is not a de Polignac number, because 82917983893 - 2⁹ = 82917983381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82917983899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41458991946 + 41458991947.

It is an arithmetic number, because the mean of its divisors is an integer number (41458991947).

Almost surely, 2^82917983893 is an apocalyptic number.

It is an amenable number.

82917983893 is a deficient number, since it is larger than the sum of its proper divisors (1).

82917983893 is an equidigital number, since it uses as much as digits as its factorization.

82917983893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47029248, while the sum is 67.

The spelling of 82917983893 in words is "eighty-two billion, nine hundred seventeen million, nine hundred eighty-three thousand, eight hundred ninety-three".