129236572443 has 32 divisors (see below), whose sum is σ = 192625638912. Its totient is φ = 76390905600.

The previous prime is 129236572417. The next prime is 129236572447. The reversal of 129236572443 is 344275632921.

It is not a de Polignac number, because 129236572443 - 2¹⁶ = 129236506907 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 129236572392 and 129236572401.

It is not an unprimeable number, because it can be changed into a prime (129236572447) 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 31 ways as a sum of consecutive naturals, for example, 4907730 + ... + 4933992.

It is an arithmetic number, because the mean of its divisors is an integer number (6019551216).

Almost surely, 2^129236572443 is an apocalyptic number.

129236572443 is a deficient number, since it is larger than the sum of its proper divisors (63389066469).

129236572443 is a wasteful number, since it uses less digits than its factorization.

129236572443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29955.

The product of its digits is 2177280, while the sum is 48.

The spelling of 129236572443 in words is "one hundred twenty-nine billion, two hundred thirty-six million, five hundred seventy-two thousand, four hundred forty-three".