29948643923 has 16 divisors (see below), whose sum is σ = 34401369600. Its totient is φ = 25785154080.

The previous prime is 29948643887. The next prime is 29948643931. The reversal of 29948643923 is 32934684992.

It is a cyclic number.

It is not a de Polignac number, because 29948643923 - 2¹⁴ = 29948627539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (29948643943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 718118 + ... + 758676.

It is an arithmetic number, because the mean of its divisors is an integer number (2150085600).

Almost surely, 2^29948643923 is an apocalyptic number.

29948643923 is a deficient number, since it is larger than the sum of its proper divisors (4452725677).

29948643923 is a wasteful number, since it uses less digits than its factorization.

29948643923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44122.

The product of its digits is 20155392, while the sum is 59.

The spelling of 29948643923 in words is "twenty-nine billion, nine hundred forty-eight million, six hundred forty-three thousand, nine hundred twenty-three".