29864656896 has 128 divisors (see below), whose sum is σ = 79931728800. Its totient is φ = 9918218240.

The previous prime is 29864656853. The next prime is 29864656919. The reversal of 29864656896 is 69865646892.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 29864656896.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45317815 + ... + 45318473.

Almost surely, 2^29864656896 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 29864656896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39965864400).

29864656896 is an abundant number, since it is smaller than the sum of its proper divisors (50067071904).

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

29864656896 is an frugal number, since it uses more digits than its factorization.

29864656896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153 (or 1125 counting only the distinct ones).

The product of its digits is 268738560, while the sum is 69.

The spelling of 29864656896 in words is "twenty-nine billion, eight hundred sixty-four million, six hundred fifty-six thousand, eight hundred ninety-six".