82568922977 has 2 divisors, whose sum is σ = 82568922978. Its totient is φ = 82568922976.

The previous prime is 82568922899. The next prime is 82568923009. The reversal of 82568922977 is 77922986528.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66530980096 + 16037942881 = 257936^2 + 126641^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82568922977 is a prime.

It is not a weakly prime, because it can be changed into another prime (82568922277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41284461488 + 41284461489.

It is an arithmetic number, because the mean of its divisors is an integer number (41284461489).

Almost surely, 2^82568922977 is an apocalyptic number.

It is an amenable number.

82568922977 is a deficient number, since it is larger than the sum of its proper divisors (1).

82568922977 is an equidigital number, since it uses as much as digits as its factorization.

82568922977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60963840, while the sum is 65.

The spelling of 82568922977 in words is "eighty-two billion, five hundred sixty-eight million, nine hundred twenty-two thousand, nine hundred seventy-seven".