29839477656 has 64 divisors (see below), whose sum is σ = 78602198400. Its totient is φ = 9413722368.

The previous prime is 29839477651. The next prime is 29839477687. The reversal of 29839477656 is 65677493892.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29839477651) 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 15 ways as a sum of consecutive naturals, for example, 439375 + ... + 502721.

It is an arithmetic number, because the mean of its divisors is an integer number (1228159350).

Almost surely, 2^29839477656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29839477656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39301099200).

29839477656 is an abundant number, since it is smaller than the sum of its proper divisors (48762720744).

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

29839477656 is a wasteful number, since it uses less digits than its factorization.

29839477656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64408 (or 64404 counting only the distinct ones).

The product of its digits is 137168640, while the sum is 66.

The spelling of 29839477656 in words is "twenty-nine billion, eight hundred thirty-nine million, four hundred seventy-seven thousand, six hundred fifty-six".