29712703644 has 144 divisors (see below), whose sum is σ = 82934403552. Its totient is φ = 8911558656.

The previous prime is 29712703621. The next prime is 29712703651. The reversal of 29712703644 is 44630721792.

It is a self number, because there is not a number n which added to its sum of digits gives 29712703644.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 12415312 + ... + 12417704.

It is an arithmetic number, because the mean of its divisors is an integer number (575933358).

Almost surely, 2^29712703644 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 29712703644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41467201776).

29712703644 is an abundant number, since it is smaller than the sum of its proper divisors (53221699908).

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

29712703644 is a wasteful number, since it uses less digits than its factorization.

29712703644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3076 (or 3071 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 45.

The spelling of 29712703644 in words is "twenty-nine billion, seven hundred twelve million, seven hundred three thousand, six hundred forty-four".