29691364128 has 48 divisors (see below), whose sum is σ = 77966259840. Its totient is φ = 9893765376.

The previous prime is 29691364103. The next prime is 29691364159. The reversal of 29691364128 is 82146319692.

It is a tau number, because it is divible by the number of its divisors (48).

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 7 ways as a sum of consecutive naturals, for example, 240633 + ... + 342471.

It is an arithmetic number, because the mean of its divisors is an integer number (1624297080).

Almost surely, 2^29691364128 is an apocalyptic number.

It is an amenable number.

29691364128 is an abundant number, since it is smaller than the sum of its proper divisors (48274895712).

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

29691364128 is a wasteful number, since it uses less digits than its factorization.

29691364128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104889 (or 104881 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 51.

The spelling of 29691364128 in words is "twenty-nine billion, six hundred ninety-one million, three hundred sixty-four thousand, one hundred twenty-eight".