127705454881 has 3 divisors (see below), whose sum is σ = 127705812241. Its totient is φ = 127705097522.

The previous prime is 127705454879. The next prime is 127705454887. The reversal of 127705454881 is 188454507721.

The square root of 127705454881 is 357359.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 188454507721 = 397 ⋅474696493.

It is not a de Polignac number, because 127705454881 - 2¹ = 127705454879 is a prime.

It is a super-2 number, since 2×127705454881² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127705454887) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 178680 + ... + 536038.

Almost surely, 2^127705454881 is an apocalyptic number.

127705454881 is the 357359-th square number.

127705454881 is the 178680-th centered octagonal number.

It is an amenable number.

127705454881 is a deficient number, since it is larger than the sum of its proper divisors (357360).

127705454881 is an frugal number, since it uses more digits than its factorization.

127705454881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714718 (or 357359 counting only the distinct ones).

The product of its (nonzero) digits is 2508800, while the sum is 52.

The spelling of 127705454881 in words is "one hundred twenty-seven billion, seven hundred five million, four hundred fifty-four thousand, eight hundred eighty-one".