129365386276 has 81 divisors (see below), whose sum is σ = 275545518129. Its totient is φ = 52984296288.

The previous prime is 129365386219. The next prime is 129365386301. The reversal of 129365386276 is 672683563921.

The square root of 129365386276 is 359674.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 5725948900 + 123639437376 = 75670^2 + 351624^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 129365386276.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 115814470 + ... + 115815586.

Almost surely, 2^129365386276 is an apocalyptic number.

129365386276 is the 359674-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129365386276

129365386276 is an abundant number, since it is smaller than the sum of its proper divisors (146180131853).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129365386276 is an equidigital number, since it uses as much as digits as its factorization.

129365386276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2298 (or 1149 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 58.

The spelling of 129365386276 in words is "one hundred twenty-nine billion, three hundred sixty-five million, three hundred eighty-six thousand, two hundred seventy-six".