29991384456 has 32 divisors (see below), whose sum is σ = 81794685600. Its totient is φ = 9088298240.

The previous prime is 29991384431. The next prime is 29991384457. The reversal of 29991384456 is 65448319992.

It is a self number, because there is not a number n which added to its sum of digits gives 29991384456.

It is not an unprimeable number, because it can be changed into a prime (29991384457) 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 7 ways as a sum of consecutive naturals, for example, 56801601 + ... + 56802128.

It is an arithmetic number, because the mean of its divisors is an integer number (2556083925).

Almost surely, 2^29991384456 is an apocalyptic number.

It is an amenable number.

29991384456 is an abundant number, since it is smaller than the sum of its proper divisors (51803301144).

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

29991384456 is a wasteful number, since it uses less digits than its factorization.

29991384456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113603749 (or 113603745 counting only the distinct ones).

The product of its digits is 16796160, while the sum is 60.

The spelling of 29991384456 in words is "twenty-nine billion, nine hundred ninety-one million, three hundred eighty-four thousand, four hundred fifty-six".