129127130046 has 64 divisors (see below), whose sum is σ = 288121204800. Its totient is φ = 42866869248.

The previous prime is 129127130029. The next prime is 129127130051. The reversal of 129127130046 is 640031721921.

129127130046 is a `hidden beast` number, since 1 + 291 + 27 + 1 + 300 + 46 = 666.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 18795100 + ... + 18801968.

It is an arithmetic number, because the mean of its divisors is an integer number (4501893825).

Almost surely, 2^129127130046 is an apocalyptic number.

129127130046 is an abundant number, since it is smaller than the sum of its proper divisors (158994074754).

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

129127130046 is a wasteful number, since it uses less digits than its factorization.

129127130046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8250 (or 8244 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

Adding to 129127130046 its reverse (640031721921), we get a palindrome (769158851967).

The spelling of 129127130046 in words is "one hundred twenty-nine billion, one hundred twenty-seven million, one hundred thirty thousand, forty-six".