29997928910871 has 6 divisors (see below), whose sum is σ = 43330341760160. Its totient is φ = 19998619273908.

The previous prime is 29997928910821. The next prime is 29997928910893. The reversal of 29997928910871 is 17801982979992.

29997928910871 is a `hidden beast` number, since 299 + 97 + 92 + 8 + 91 + 0 + 8 + 71 = 666.

It is not a de Polignac number, because 29997928910871 - 2⁹ = 29997928910359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29997928910801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1666551606151 + ... + 1666551606168.

Almost surely, 2^{29997928910871} is an apocalyptic number.

29997928910871 is a deficient number, since it is larger than the sum of its proper divisors (13332412849289).

29997928910871 is a wasteful number, since it uses less digits than its factorization.

29997928910871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3333103212325 (or 3333103212322 counting only the distinct ones).

The product of its (nonzero) digits is 740710656, while the sum is 81.

The spelling of 29997928910871 in words is "twenty-nine trillion, nine hundred ninety-seven billion, nine hundred twenty-eight million, nine hundred ten thousand, eight hundred seventy-one".