82173501211 has 2 divisors, whose sum is σ = 82173501212. Its totient is φ = 82173501210.

The previous prime is 82173501199. The next prime is 82173501269. The reversal of 82173501211 is 11210537128.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82173501211 is a prime.

It is not a weakly prime, because it can be changed into another prime (82173501611) 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, 41086750605 + 41086750606.

It is an arithmetic number, because the mean of its divisors is an integer number (41086750606).

Almost surely, 2^82173501211 is an apocalyptic number.

82173501211 is a deficient number, since it is larger than the sum of its proper divisors (1).

82173501211 is an equidigital number, since it uses as much as digits as its factorization.

82173501211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 31.

The spelling of 82173501211 in words is "eighty-two billion, one hundred seventy-three million, five hundred one thousand, two hundred eleven".