129849561804 has 24 divisors (see below), whose sum is σ = 303011854768. Its totient is φ = 43278966720.

The previous prime is 129849561773. The next prime is 129849561827. The reversal of 129849561804 is 408165948921.

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 7 ways as a sum of consecutive naturals, for example, 398107 + ... + 646674.

Almost surely, 2^129849561804 is an apocalyptic number.

It is an amenable number.

129849561804 is an abundant number, since it is smaller than the sum of its proper divisors (173162292964).

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

129849561804 is a wasteful number, since it uses less digits than its factorization.

129849561804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055145 (or 1055143 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 57.

The spelling of 129849561804 in words is "one hundred twenty-nine billion, eight hundred forty-nine million, five hundred sixty-one thousand, eight hundred four".