5172367256066 has 4 divisors (see below), whose sum is σ = 7758550884102. Its totient is φ = 2586183628032.

The previous prime is 5172367255967. The next prime is 5172367256087. The reversal of 5172367256066 is 6606527632715.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2884647480625 + 2287719775441 = 1698425^2 + 1512521^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1293091814015 + ... + 1293091814018.

Almost surely, 2^{5172367256066} is an apocalyptic number.

5172367256066 is a deficient number, since it is larger than the sum of its proper divisors (2586183628036).

5172367256066 is a wasteful number, since it uses less digits than its factorization.

5172367256066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2586183628035.

The product of its (nonzero) digits is 19051200, while the sum is 56.

The spelling of 5172367256066 in words is "five trillion, one hundred seventy-two billion, three hundred sixty-seven million, two hundred fifty-six thousand, sixty-six".