29323144643 has 4 divisors (see below), whose sum is σ = 31578771168. Its totient is φ = 27067518120.

The previous prime is 29323144633. The next prime is 29323144687. The reversal of 29323144643 is 34644132392.

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 29323144643 - 2⁶ = 29323144579 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 29323144643.

It is not an unprimeable number, because it can be changed into a prime (29323144633) 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, 1127813243 + ... + 1127813268.

It is an arithmetic number, because the mean of its divisors is an integer number (7894692792).

Almost surely, 2^29323144643 is an apocalyptic number.

29323144643 is a deficient number, since it is larger than the sum of its proper divisors (2255626525).

29323144643 is a wasteful number, since it uses less digits than its factorization.

29323144643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2255626524.

The product of its digits is 373248, while the sum is 41.

The spelling of 29323144643 in words is "twenty-nine billion, three hundred twenty-three million, one hundred forty-four thousand, six hundred forty-three".