129768534737 has 2 divisors, whose sum is σ = 129768534738. Its totient is φ = 129768534736.

The previous prime is 129768534719. The next prime is 129768534767. The reversal of 129768534737 is 737435867921.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129340210321 + 428324416 = 359639^2 + 20696^2 .

It is a cyclic number.

It is not a de Polignac number, because 129768534737 - 2¹⁸ = 129768272593 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 129768534737.

It is not a weakly prime, because it can be changed into another prime (129768534767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64884267368 + 64884267369.

It is an arithmetic number, because the mean of its divisors is an integer number (64884267369).

Almost surely, 2^129768534737 is an apocalyptic number.

It is an amenable number.

129768534737 is a deficient number, since it is larger than the sum of its proper divisors (1).

129768534737 is an equidigital number, since it uses as much as digits as its factorization.

129768534737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 53343360, while the sum is 62.

The spelling of 129768534737 in words is "one hundred twenty-nine billion, seven hundred sixty-eight million, five hundred thirty-four thousand, seven hundred thirty-seven".