29995517712 has 80 divisors (see below), whose sum is σ = 80913392640. Its totient is φ = 9557175936.

The previous prime is 29995517707. The next prime is 29995517731. The reversal of 29995517712 is 21771559992.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1734613 + ... + 1751819.

It is an arithmetic number, because the mean of its divisors is an integer number (1011417408).

Almost surely, 2^29995517712 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 29995517712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40456696320).

29995517712 is an abundant number, since it is smaller than the sum of its proper divisors (50917874928).

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

29995517712 is a wasteful number, since it uses less digits than its factorization.

29995517712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18820 (or 18814 counting only the distinct ones).

The product of its digits is 3572100, while the sum is 57.

The spelling of 29995517712 in words is "twenty-nine billion, nine hundred ninety-five million, five hundred seventeen thousand, seven hundred twelve".