29805148809 has 24 divisors (see below), whose sum is σ = 44419284000. Its totient is φ = 19245965760.

The previous prime is 29805148787. The next prime is 29805148811. The reversal of 29805148809 is 90884150892.

It is not a de Polignac number, because 29805148809 - 2¹⁵ = 29805116041 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (29805148819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 239259 + ... + 341840.

It is an arithmetic number, because the mean of its divisors is an integer number (1850803500).

Almost surely, 2^29805148809 is an apocalyptic number.

It is an amenable number.

29805148809 is a deficient number, since it is larger than the sum of its proper divisors (14614135191).

29805148809 is a wasteful number, since it uses less digits than its factorization.

29805148809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581285 (or 581282 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 54.

The spelling of 29805148809 in words is "twenty-nine billion, eight hundred five million, one hundred forty-eight thousand, eight hundred nine".