120475451729161 has 9 divisors (see below), whose sum is σ = 121011021261991. Its totient is φ = 119942242261312.

The previous prime is 120475451729141. The next prime is 120475451729177. The reversal of 120475451729161 is 161927154574021.

The square root of 120475451729161 is 10976131.

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., 6027049550025 + 114448402179136 = 2455005^2 + 10698056^2 .

It is not a de Polignac number, because 120475451729161 - 2³⁹ = 119925695915273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120475451729141) by changing a digit.

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 8 ways as a sum of consecutive naturals, for example, 2491557561 + ... + 2491605913.

Almost surely, 2^{120475451729161} is an apocalyptic number.

120475451729161 is the 10976131-st square number.

120475451729161 is the 5488066-th centered octagonal number.

It is an amenable number.

120475451729161 is a deficient number, since it is larger than the sum of its proper divisors (535569532830).

120475451729161 is an frugal number, since it uses more digits than its factorization.

120475451729161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97160 (or 48580 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 55.

The spelling of 120475451729161 in words is "one hundred twenty trillion, four hundred seventy-five billion, four hundred fifty-one million, seven hundred twenty-nine thousand, one hundred sixty-one".