29805927913 has 4 divisors (see below), whose sum is σ = 30440096640. Its totient is φ = 29171759188.

The previous prime is 29805927881. The next prime is 29805927917. The reversal of 29805927913 is 31972950892.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 29805927913 - 2⁵ = 29805927881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29805927917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317084293 + ... + 317084386.

It is an arithmetic number, because the mean of its divisors is an integer number (7610024160).

Almost surely, 2^29805927913 is an apocalyptic number.

It is an amenable number.

29805927913 is a deficient number, since it is larger than the sum of its proper divisors (634168727).

29805927913 is an equidigital number, since it uses as much as digits as its factorization.

29805927913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634168726.

The product of its (nonzero) digits is 2449440, while the sum is 55.

The spelling of 29805927913 in words is "twenty-nine billion, eight hundred five million, nine hundred twenty-seven thousand, nine hundred thirteen".