29808021371 has 4 divisors (see below), whose sum is σ = 29809390872. Its totient is φ = 29806651872.

The previous prime is 29808021337. The next prime is 29808021379. The reversal of 29808021371 is 17312080892.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 29808021371 - 2³⁰ = 28734279547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29808021379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 651566 + ... + 695811.

It is an arithmetic number, because the mean of its divisors is an integer number (7452347718).

Almost surely, 2^29808021371 is an apocalyptic number.

29808021371 is a deficient number, since it is larger than the sum of its proper divisors (1369501).

29808021371 is a wasteful number, since it uses less digits than its factorization.

29808021371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1369500.

The product of its (nonzero) digits is 48384, while the sum is 41.

The spelling of 29808021371 in words is "twenty-nine billion, eight hundred eight million, twenty-one thousand, three hundred seventy-one".