129465763832729 has 2 divisors, whose sum is σ = 129465763832730. Its totient is φ = 129465763832728.

The previous prime is 129465763832707. The next prime is 129465763832759. The reversal of 129465763832729 is 927238367564921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129457700690704 + 8063142025 = 11377948^2 + 89795^2 .

It is a cyclic number.

It is not a de Polignac number, because 129465763832729 - 2¹² = 129465763828633 is a prime.

It is a super-2 number, since 2×129465763832729² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (129465763832759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64732881916364 + 64732881916365.

It is an arithmetic number, because the mean of its divisors is an integer number (64732881916365).

Almost surely, 2^{129465763832729} is an apocalyptic number.

It is an amenable number.

129465763832729 is a deficient number, since it is larger than the sum of its proper divisors (1).

129465763832729 is an equidigital number, since it uses as much as digits as its factorization.

129465763832729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1646023680, while the sum is 74.

The spelling of 129465763832729 in words is "one hundred twenty-nine trillion, four hundred sixty-five billion, seven hundred sixty-three million, eight hundred thirty-two thousand, seven hundred twenty-nine".