83168780029 has 2 divisors, whose sum is σ = 83168780030. Its totient is φ = 83168780028.

The previous prime is 83168780027. The next prime is 83168780041. The reversal of 83168780029 is 92008786138.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80567984025 + 2600796004 = 283845^2 + 50998^2 .

It is a cyclic number.

It is not a de Polignac number, because 83168780029 - 2¹ = 83168780027 is a prime.

Together with 83168780027, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83168780027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41584390014 + 41584390015.

It is an arithmetic number, because the mean of its divisors is an integer number (41584390015).

Almost surely, 2^83168780029 is an apocalyptic number.

It is an amenable number.

83168780029 is a deficient number, since it is larger than the sum of its proper divisors (1).

83168780029 is an equidigital number, since it uses as much as digits as its factorization.

83168780029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1161216, while the sum is 52.

The spelling of 83168780029 in words is "eighty-three billion, one hundred sixty-eight million, seven hundred eighty thousand, twenty-nine".