29855205056 has 28 divisors (see below), whose sum is σ = 59797617768. Its totient is φ = 14788088832.

The previous prime is 29855205049. The next prime is 29855205059. The reversal of 29855205056 is 65050255892.

It is a self number, because there is not a number n which added to its sum of digits gives 29855205056.

It is not an unprimeable number, because it can be changed into a prime (29855205059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2173001 + ... + 2186696.

It is an arithmetic number, because the mean of its divisors is an integer number (2135629206).

Almost surely, 2^29855205056 is an apocalyptic number.

It is an amenable number.

29855205056 is an abundant number, since it is smaller than the sum of its proper divisors (29942412712).

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

29855205056 is a wasteful number, since it uses less digits than its factorization.

29855205056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4359816 (or 4359806 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 47.

The spelling of 29855205056 in words is "twenty-nine billion, eight hundred fifty-five million, two hundred five thousand, fifty-six".