29947306823 has 6 divisors (see below), whose sum is σ = 34836663096. Its totient is φ = 25669120092.

The previous prime is 29947306813. The next prime is 29947306853. The reversal of 29947306823 is 32860374992.

It is not a de Polignac number, because 29947306823 - 2⁶ = 29947306759 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 (29947306813) 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, 305584715 + ... + 305584812.

It is an arithmetic number, because the mean of its divisors is an integer number (5806110516).

Almost surely, 2^29947306823 is an apocalyptic number.

29947306823 is a deficient number, since it is larger than the sum of its proper divisors (4889356273).

29947306823 is an equidigital number, since it uses as much as digits as its factorization.

29947306823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611169541 (or 611169534 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 53.

The spelling of 29947306823 in words is "twenty-nine billion, nine hundred forty-seven million, three hundred six thousand, eight hundred twenty-three".