129393742433 has 2 divisors, whose sum is σ = 129393742434. Its totient is φ = 129393742432.

The previous prime is 129393742409. The next prime is 129393742469. The reversal of 129393742433 is 334247393921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112884576289 + 16509166144 = 335983^2 + 128488^2 .

It is a cyclic number.

It is not a de Polignac number, because 129393742433 - 2⁶ = 129393742369 is a prime.

It is not a weakly prime, because it can be changed into another prime (129393742733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64696871216 + 64696871217.

It is an arithmetic number, because the mean of its divisors is an integer number (64696871217).

Almost surely, 2^129393742433 is an apocalyptic number.

It is an amenable number.

129393742433 is a deficient number, since it is larger than the sum of its proper divisors (1).

129393742433 is an equidigital number, since it uses as much as digits as its factorization.

129393742433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2939328, while the sum is 50.

The spelling of 129393742433 in words is "one hundred twenty-nine billion, three hundred ninety-three million, seven hundred forty-two thousand, four hundred thirty-three".