29543421923 has 8 divisors (see below), whose sum is σ = 30567494880. Its totient is φ = 28519704640.

The previous prime is 29543421913. The next prime is 29543421937. The reversal of 29543421923 is 32912434592.

It is a Cunningham number, because it is equal to 171882²-1.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 29543421923 - 2¹⁰ = 29543420899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29543421913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85943 + ... + 257823.

It is an arithmetic number, because the mean of its divisors is an integer number (3820936860).

Almost surely, 2^29543421923 is an apocalyptic number.

29543421923 is a deficient number, since it is larger than the sum of its proper divisors (1024072957).

29543421923 is a wasteful number, since it uses less digits than its factorization.

29543421923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177837.

The product of its digits is 466560, while the sum is 44.

The spelling of 29543421923 in words is "twenty-nine billion, five hundred forty-three million, four hundred twenty-one thousand, nine hundred twenty-three".