120803685691329 has 9 divisors (see below), whose sum is σ = 174494260293249. Its totient is φ = 80535768478740.

The previous prime is 120803685691187. The next prime is 120803685691331. The reversal of 120803685691329 is 923196586308021.

The square root of 120803685691329 is 10991073.

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

120803685691329 is a `hidden beast` number, since 1 + 2 + 0 + 8 + 0 + 3 + 68 + 569 + 1 + 3 + 2 + 9 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 120803685691329 - 2³³ = 120795095756737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120803685691379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 31141374 + ... + 34805064.

Almost surely, 2^{120803685691329} is an apocalyptic number.

120803685691329 is the 10991073-rd square number.

120803685691329 is the 5495537-th centered octagonal number.

It is an amenable number.

120803685691329 is a deficient number, since it is larger than the sum of its proper divisors (53690574601920).

120803685691329 is an frugal number, since it uses more digits than its factorization.

120803685691329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7327388 (or 3663694 counting only the distinct ones).

The product of its (nonzero) digits is 33592320, while the sum is 63.

The spelling of 120803685691329 in words is "one hundred twenty trillion, eight hundred three billion, six hundred eighty-five million, six hundred ninety-one thousand, three hundred twenty-nine".