29169728023 has 4 divisors (see below), whose sum is σ = 29198298808. Its totient is φ = 29141157240.

The previous prime is 29169728011. The next prime is 29169728033. The reversal of 29169728023 is 32082796192.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29169728023 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 (29169728033) 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, 14283861 + ... + 14285902.

It is an arithmetic number, because the mean of its divisors is an integer number (7299574702).

Almost surely, 2^29169728023 is an apocalyptic number.

29169728023 is a deficient number, since it is larger than the sum of its proper divisors (28570785).

29169728023 is a wasteful number, since it uses less digits than its factorization.

29169728023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28570784.

The product of its (nonzero) digits is 653184, while the sum is 49.

The spelling of 29169728023 in words is "twenty-nine billion, one hundred sixty-nine million, seven hundred twenty-eight thousand, twenty-three".