129263462477 has 2 divisors, whose sum is σ = 129263462478. Its totient is φ = 129263462476.

The previous prime is 129263462429. The next prime is 129263462509. The reversal of 129263462477 is 774264362921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89982600841 + 39280861636 = 299971^2 + 198194^2 .

It is a cyclic number.

It is not a de Polignac number, because 129263462477 - 2⁸ = 129263462221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129263462407) 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, 64631731238 + 64631731239.

It is an arithmetic number, because the mean of its divisors is an integer number (64631731239).

Almost surely, 2^129263462477 is an apocalyptic number.

It is an amenable number.

129263462477 is a deficient number, since it is larger than the sum of its proper divisors (1).

129263462477 is an equidigital number, since it uses as much as digits as its factorization.

129263462477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6096384, while the sum is 53.

The spelling of 129263462477 in words is "one hundred twenty-nine billion, two hundred sixty-three million, four hundred sixty-two thousand, four hundred seventy-seven".