129813901298 has 4 divisors (see below), whose sum is σ = 194720851950. Its totient is φ = 64906950648.

The previous prime is 129813901289. The next prime is 129813901319. The reversal of 129813901298 is 892109318921.

It is a happy number.

129813901298 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 892109318921 = 43 ⋅20746728347.

It can be written as a sum of positive squares in only one way, i.e., 96899596369 + 32914304929 = 311287^2 + 181423^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32453475323 + ... + 32453475326.

Almost surely, 2^129813901298 is an apocalyptic number.

129813901298 is a deficient number, since it is larger than the sum of its proper divisors (64906950652).

129813901298 is an equidigital number, since it uses as much as digits as its factorization.

129813901298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64906950651.

The product of its (nonzero) digits is 559872, while the sum is 53.

The spelling of 129813901298 in words is "one hundred twenty-nine billion, eight hundred thirteen million, nine hundred one thousand, two hundred ninety-eight".