82210905377 has 2 divisors, whose sum is σ = 82210905378. Its totient is φ = 82210905376.

The previous prime is 82210905349. The next prime is 82210905389. The reversal of 82210905377 is 77350901228.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46908629056 + 35302276321 = 216584^2 + 187889^2 .

It is a cyclic number.

It is not a de Polignac number, because 82210905377 - 2¹⁴ = 82210888993 is a prime.

It is not a weakly prime, because it can be changed into another prime (82210985377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41105452688 + 41105452689.

It is an arithmetic number, because the mean of its divisors is an integer number (41105452689).

Almost surely, 2^82210905377 is an apocalyptic number.

It is an amenable number.

82210905377 is a deficient number, since it is larger than the sum of its proper divisors (1).

82210905377 is an equidigital number, since it uses as much as digits as its factorization.

82210905377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 44.

The spelling of 82210905377 in words is "eighty-two billion, two hundred ten million, nine hundred five thousand, three hundred seventy-seven".