129356610668 has 12 divisors (see below), whose sum is σ = 226379214432. Its totient is φ = 64676835120.

The previous prime is 129356610659. The next prime is 129356610689. The reversal of 129356610668 is 866016653921.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156068 + ... + 532043.

It is an arithmetic number, because the mean of its divisors is an integer number (18864934536).

Almost surely, 2^129356610668 is an apocalyptic number.

It is an amenable number.

129356610668 is a deficient number, since it is larger than the sum of its proper divisors (97022603764).

129356610668 is a wasteful number, since it uses less digits than its factorization.

129356610668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735112 (or 735110 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 53.

The spelling of 129356610668 in words is "one hundred twenty-nine billion, three hundred fifty-six million, six hundred ten thousand, six hundred sixty-eight".