29818745129 has 4 divisors (see below), whose sum is σ = 29819188560. Its totient is φ = 29818301700.

The previous prime is 29818745123. The next prime is 29818745171. The reversal of 29818745129 is 92154781892.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 29818745129 - 2²⁰ = 29817696553 is a prime.

It is a super-2 number, since 2×29818745129² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (29818745123) 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 3 ways as a sum of consecutive naturals, for example, 97739 + ... + 263040.

It is an arithmetic number, because the mean of its divisors is an integer number (7454797140).

Almost surely, 2^29818745129 is an apocalyptic number.

It is an amenable number.

29818745129 is a deficient number, since it is larger than the sum of its proper divisors (443431).

29818745129 is an equidigital number, since it uses as much as digits as its factorization.

29818745129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443430.

The product of its digits is 2903040, while the sum is 56.

The spelling of 29818745129 in words is "twenty-nine billion, eight hundred eighteen million, seven hundred forty-five thousand, one hundred twenty-nine".