129820453433 has 16 divisors (see below), whose sum is σ = 142561605120. Its totient is φ = 117236246400.

The previous prime is 129820453423. The next prime is 129820453447. The reversal of 129820453433 is 334354028921.

It is a cyclic number.

It is not a de Polignac number, because 129820453433 - 2²⁸ = 129552017977 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (129820453423) 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, 8988728 + ... + 9003158.

It is an arithmetic number, because the mean of its divisors is an integer number (8910100320).

Almost surely, 2^129820453433 is an apocalyptic number.

It is an amenable number.

129820453433 is a deficient number, since it is larger than the sum of its proper divisors (12741151687).

129820453433 is a wasteful number, since it uses less digits than its factorization.

129820453433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19808.

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 129820453433 in words is "one hundred twenty-nine billion, eight hundred twenty million, four hundred fifty-three thousand, four hundred thirty-three".