73849806275281 has 3 divisors (see below), whose sum is σ = 73849814868873. Its totient is φ = 73849797681690.

The previous prime is 73849806275257. The next prime is 73849806275383. The reversal of 73849806275281 is 18257260894837.

The square root of 73849806275281 is 8593591.

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 is not a de Polignac number, because 73849806275281 - 2⁵ = 73849806275249 is a prime.

It is a super-2 number, since 2×73849806275281² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73849806275281.

It is not an unprimeable number, because it can be changed into a prime (73849806275081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4296796 + ... + 12890386.

It is an arithmetic number, because the mean of its divisors is an integer number (24616604956291).

It is a 1-persistent number, because it is pandigital, but 2⋅73849806275281 = 147699612550562 is not.

Almost surely, 2^{73849806275281} is an apocalyptic number.

73849806275281 is the 8593591-st square number.

73849806275281 is the 4296796-th centered octagonal number.

It is an amenable number.

73849806275281 is a deficient number, since it is larger than the sum of its proper divisors (8593592).

73849806275281 is an frugal number, since it uses more digits than its factorization.

73849806275281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17187182 (or 8593591 counting only the distinct ones).

The product of its (nonzero) digits is 325140480, while the sum is 70.

The spelling of 73849806275281 in words is "seventy-three trillion, eight hundred forty-nine billion, eight hundred six million, two hundred seventy-five thousand, two hundred eighty-one".