129244436984794 has 16 divisors (see below), whose sum is σ = 206334154514088. Its totient is φ = 60505777262592.

The previous prime is 129244436984717. The next prime is 129244436984807. The reversal of 129244436984794 is 497489634442921.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 127490361892569 + 1754075092225 = 11291163^2 + 1324415^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 129244436984794.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9847938957 + ... + 9847952080.

Almost surely, 2^{129244436984794} is an apocalyptic number.

129244436984794 is a deficient number, since it is larger than the sum of its proper divisors (77089717529294).

129244436984794 is a wasteful number, since it uses less digits than its factorization.

129244436984794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19695891249.

The product of its digits is 3009871872, while the sum is 76.

The spelling of 129244436984794 in words is "one hundred twenty-nine trillion, two hundred forty-four billion, four hundred thirty-six million, nine hundred eighty-four thousand, seven hundred ninety-four".