82040041987 has 2 divisors, whose sum is σ = 82040041988. Its totient is φ = 82040041986.

The previous prime is 82040041961. The next prime is 82040042129. The reversal of 82040041987 is 78914004028.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82040041987 is a prime.

It is not a weakly prime, because it can be changed into another prime (82040041487) 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, 41020020993 + 41020020994.

It is an arithmetic number, because the mean of its divisors is an integer number (41020020994).

Almost surely, 2^82040041987 is an apocalyptic number.

82040041987 is a deficient number, since it is larger than the sum of its proper divisors (1).

82040041987 is an equidigital number, since it uses as much as digits as its factorization.

82040041987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 43.

The spelling of 82040041987 in words is "eighty-two billion, forty million, forty-one thousand, nine hundred eighty-seven".