73127143176481 has 3 divisors (see below), whose sum is σ = 73127151727923. Its totient is φ = 73127134625040.

The previous prime is 73127143176427. The next prime is 73127143176499. The reversal of 73127143176481 is 18467134172137.

The square root of 73127143176481 is 8551441.

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.

It can be written as a sum of positive squares in only one way, i.e., 9041994874081 + 64085148302400 = 3006991^2 + 8005320^2 .

It is not a de Polignac number, because 73127143176481 - 2⁹ = 73127143175969 is a prime.

It is a super-2 number, since 2×73127143176481² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73127143176421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4275721 + ... + 12827161.

It is an arithmetic number, because the mean of its divisors is an integer number (24375717242641).

Almost surely, 2^{73127143176481} is an apocalyptic number.

73127143176481 is the 8551441-st square number.

73127143176481 is the 4275721-st centered octagonal number.

It is an amenable number.

73127143176481 is a deficient number, since it is larger than the sum of its proper divisors (8551442).

73127143176481 is an frugal number, since it uses more digits than its factorization.

73127143176481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17102882 (or 8551441 counting only the distinct ones).

The product of its digits is 4741632, while the sum is 55.

The spelling of 73127143176481 in words is "seventy-three trillion, one hundred twenty-seven billion, one hundred forty-three million, one hundred seventy-six thousand, four hundred eighty-one".