129781603347 has 8 divisors (see below), whose sum is σ = 188773241280. Its totient is φ = 78655517160.

The previous prime is 129781603331. The next prime is 129781603351. The reversal of 129781603347 is 743306187921.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 129781603347 - 2⁴ = 129781603331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 129781603347.

It is not an unprimeable number, because it can be changed into a prime (129781603247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1966387897 + ... + 1966387962.

It is an arithmetic number, because the mean of its divisors is an integer number (23596655160).

Almost surely, 2^129781603347 is an apocalyptic number.

129781603347 is a deficient number, since it is larger than the sum of its proper divisors (58991637933).

129781603347 is a wasteful number, since it uses less digits than its factorization.

129781603347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3932775873.

The product of its (nonzero) digits is 1524096, while the sum is 51.

The spelling of 129781603347 in words is "one hundred twenty-nine billion, seven hundred eighty-one million, six hundred three thousand, three hundred forty-seven".