83864941261 has 2 divisors, whose sum is σ = 83864941262. Its totient is φ = 83864941260.

The previous prime is 83864941219. The next prime is 83864941327. The reversal of 83864941261 is 16214946838.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66930864100 + 16934077161 = 258710^2 + 130131^2 .

It is a cyclic number.

It is not a de Polignac number, because 83864941261 - 2⁷ = 83864941133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83864941199 and 83864941208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83864945261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41932470630 + 41932470631.

It is an arithmetic number, because the mean of its divisors is an integer number (41932470631).

Almost surely, 2^83864941261 is an apocalyptic number.

It is an amenable number.

83864941261 is a deficient number, since it is larger than the sum of its proper divisors (1).

83864941261 is an equidigital number, since it uses as much as digits as its factorization.

83864941261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1990656, while the sum is 52.

The spelling of 83864941261 in words is "eighty-three billion, eight hundred sixty-four million, nine hundred forty-one thousand, two hundred sixty-one".