82140939773 has 2 divisors, whose sum is σ = 82140939774. Its totient is φ = 82140939772.

The previous prime is 82140939767. The next prime is 82140939817. The reversal of 82140939773 is 37793904128.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76741188484 + 5399751289 = 277022^2 + 73483^2 .

It is a cyclic number.

It is not a de Polignac number, because 82140939773 - 2²⁸ = 81872504317 is a prime.

It is a super-2 number, since 2×82140939773² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82140932773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41070469886 + 41070469887.

It is an arithmetic number, because the mean of its divisors is an integer number (41070469887).

Almost surely, 2^82140939773 is an apocalyptic number.

It is an amenable number.

82140939773 is a deficient number, since it is larger than the sum of its proper divisors (1).

82140939773 is an equidigital number, since it uses as much as digits as its factorization.

82140939773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2286144, while the sum is 53.

The spelling of 82140939773 in words is "eighty-two billion, one hundred forty million, nine hundred thirty-nine thousand, seven hundred seventy-three".