82938239977 has 2 divisors, whose sum is σ = 82938239978. Its totient is φ = 82938239976.

The previous prime is 82938239921. The next prime is 82938240029. The reversal of 82938239977 is 77993283928.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72371222361 + 10567017616 = 269019^2 + 102796^2 .

It is a cyclic number.

It is not a de Polignac number, because 82938239977 - 2⁷ = 82938239849 is a prime.

It is not a weakly prime, because it can be changed into another prime (82938231977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41469119988 + 41469119989.

It is an arithmetic number, because the mean of its divisors is an integer number (41469119989).

Almost surely, 2^82938239977 is an apocalyptic number.

It is an amenable number.

82938239977 is a deficient number, since it is larger than the sum of its proper divisors (1).

82938239977 is an equidigital number, since it uses as much as digits as its factorization.

82938239977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82301184, while the sum is 67.

The spelling of 82938239977 in words is "eighty-two billion, nine hundred thirty-eight million, two hundred thirty-nine thousand, nine hundred seventy-seven".