29781117204 has 24 divisors (see below), whose sum is σ = 71885456160. Its totient is φ = 9584727264.

The previous prime is 29781117187. The next prime is 29781117211. The reversal of 29781117204 is 40271118792.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 42788614 + ... + 42789309.

It is an arithmetic number, because the mean of its divisors is an integer number (2995227340).

Almost surely, 2^29781117204 is an apocalyptic number.

It is an amenable number.

29781117204 is an abundant number, since it is smaller than the sum of its proper divisors (42104338956).

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

29781117204 is a wasteful number, since it uses less digits than its factorization.

29781117204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85577959 (or 85577957 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 42.

The spelling of 29781117204 in words is "twenty-nine billion, seven hundred eighty-one million, one hundred seventeen thousand, two hundred four".