129147611077 has 2 divisors, whose sum is σ = 129147611078. Its totient is φ = 129147611076.

The previous prime is 129147611063. The next prime is 129147611171. The reversal of 129147611077 is 770116741921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124354264321 + 4793346756 = 352639^2 + 69234^2 .

It is a cyclic number.

It is not a de Polignac number, because 129147611077 - 2¹⁵ = 129147578309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129147611977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64573805538 + 64573805539.

It is an arithmetic number, because the mean of its divisors is an integer number (64573805539).

Almost surely, 2^129147611077 is an apocalyptic number.

It is an amenable number.

129147611077 is a deficient number, since it is larger than the sum of its proper divisors (1).

129147611077 is an equidigital number, since it uses as much as digits as its factorization.

129147611077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 148176, while the sum is 46.

The spelling of 129147611077 in words is "one hundred twenty-nine billion, one hundred forty-seven million, six hundred eleven thousand, seventy-seven".