29718254899 has 4 divisors (see below), whose sum is σ = 29722605880.
Its totient is φ = 29713903920.
The previous prime is 29718254887. The next prime is 29718254933. The reversal of 29718254899 is 99845281792.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-29718254899 is a prime.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 29718254899.
It is not an unprimeable number, because it can be changed into a prime (29718254869) 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, 2165229 + ... + 2178910.
It is an arithmetic number, because the mean of its divisors is an integer number (7430651470).
Almost surely, 229718254899 is an apocalyptic number.
29718254899 is a deficient number, since it is larger than the sum of its proper divisors (4350981).
29718254899 is an equidigital number, since it uses as much as digits as its factorization.
29718254899 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4350980.
The product of its digits is 26127360, while the sum is 64.
The spelling of 29718254899 in words is "twenty-nine billion, seven hundred eighteen million, two hundred fifty-four thousand, eight hundred ninety-nine".