129311358434 has 16 divisors (see below), whose sum is σ = 195292020600. Its totient is φ = 64214121600.

The previous prime is 129311358431. The next prime is 129311358467. The reversal of 129311358434 is 434853113921.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 96660675409 + 32650683025 = 310903^2 + 180695^2 .

It is not an unprimeable number, because it can be changed into a prime (129311358431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3138632 + ... + 3179564.

Almost surely, 2^129311358434 is an apocalyptic number.

129311358434 is a deficient number, since it is larger than the sum of its proper divisors (65980662166).

129311358434 is a wasteful number, since it uses less digits than its factorization.

129311358434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51685.

The product of its digits is 311040, while the sum is 44.

The spelling of 129311358434 in words is "one hundred twenty-nine billion, three hundred eleven million, three hundred fifty-eight thousand, four hundred thirty-four".