129665570394 has 16 divisors (see below), whose sum is σ = 259338603168. Its totient is φ = 43220613072.

The previous prime is 129665570393. The next prime is 129665570413. The reversal of 129665570394 is 493075566921.

It is not an unprimeable number, because it can be changed into a prime (129665570393) 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, 70777 + ... + 514140.

It is an arithmetic number, because the mean of its divisors is an integer number (16208662698).

Almost surely, 2^129665570394 is an apocalyptic number.

129665570394 is an abundant number, since it is smaller than the sum of its proper divisors (129673032774).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129665570394 is a wasteful number, since it uses less digits than its factorization.

129665570394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621869.

The product of its (nonzero) digits is 12247200, while the sum is 57.

The spelling of 129665570394 in words is "one hundred twenty-nine billion, six hundred sixty-five million, five hundred seventy thousand, three hundred ninety-four".