129205794482 has 18 divisors (see below), whose sum is σ = 194588816733. Its totient is φ = 64343896992.

The previous prime is 129205794457. The next prime is 129205794503. The reversal of 129205794482 is 284497502921.

It can be written as a sum of positive squares in 2 ways, for example, as 105372301321 + 23833493161 = 324611^2 + 154381^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=254171.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 220111793 + ... + 220112379.

Almost surely, 2^129205794482 is an apocalyptic number.

129205794482 is a deficient number, since it is larger than the sum of its proper divisors (65383022251).

129205794482 is an frugal number, since it uses more digits than its factorization.

129205794482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042 (or 1022 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 53.

The spelling of 129205794482 in words is "one hundred twenty-nine billion, two hundred five million, seven hundred ninety-four thousand, four hundred eighty-two".