29998908943820 has 48 divisors (see below), whose sum is σ = 63176893895808. Its totient is φ = 11965443567360.

The previous prime is 29998908943789. The next prime is 29998908943919. The reversal of 29998908943820 is 2834980989992.

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, 45905165 + ... + 46554075.

It is an arithmetic number, because the mean of its divisors is an integer number (1316185289496).

Almost surely, 2^{29998908943820} is an apocalyptic number.

29998908943820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29998908943820 is an abundant number, since it is smaller than the sum of its proper divisors (33177984951988).

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

29998908943820 is a wasteful number, since it uses less digits than its factorization.

29998908943820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655490 (or 655488 counting only the distinct ones).

The product of its (nonzero) digits is 1451188224, while the sum is 80.

The spelling of 29998908943820 in words is "twenty-nine trillion, nine hundred ninety-eight billion, nine hundred eight million, nine hundred forty-three thousand, eight hundred twenty".