29998399928845 has 4 divisors (see below), whose sum is σ = 35998079914620. Its totient is φ = 23998719943072.

The previous prime is 29998399928813. The next prime is 29998399928947. The reversal of 29998399928845 is 54882999389992.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23596093171561 + 6402306757284 = 4857581^2 + 2530278^2 .

It is a cyclic number.

It is not a de Polignac number, because 29998399928845 - 2⁵ = 29998399928813 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2999839992880 + ... + 2999839992889.

It is an arithmetic number, because the mean of its divisors is an integer number (8999519978655).

Almost surely, 2^{29998399928845} is an apocalyptic number.

It is an amenable number.

29998399928845 is a deficient number, since it is larger than the sum of its proper divisors (5999679985775).

29998399928845 is an equidigital number, since it uses as much as digits as its factorization.

29998399928845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5999679985774.

The product of its digits is 65303470080, while the sum is 94.

The spelling of 29998399928845 in words is "twenty-nine trillion, nine hundred ninety-eight billion, three hundred ninety-nine million, nine hundred twenty-eight thousand, eight hundred forty-five".