129391817083 has 2 divisors, whose sum is σ = 129391817084. Its totient is φ = 129391817082.

The previous prime is 129391817081. The next prime is 129391817153. The reversal of 129391817083 is 380718193921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129391817083 - 2¹ = 129391817081 is a prime.

It is a super-3 number, since 3×129391817083³ (a number of 34 digits) contains 333 as substring.

Together with 129391817081, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 129391817083.

It is not a weakly prime, because it can be changed into another prime (129391817081) 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, 64695908541 + 64695908542.

It is an arithmetic number, because the mean of its divisors is an integer number (64695908542).

Almost surely, 2^129391817083 is an apocalyptic number.

129391817083 is a deficient number, since it is larger than the sum of its proper divisors (1).

129391817083 is an equidigital number, since it uses as much as digits as its factorization.

129391817083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 52.

The spelling of 129391817083 in words is "one hundred twenty-nine billion, three hundred ninety-one million, eight hundred seventeen thousand, eighty-three".