172728578332363 has 2 divisors, whose sum is σ = 172728578332364. Its totient is φ = 172728578332362.

The previous prime is 172728578332337. The next prime is 172728578332393. The reversal of 172728578332363 is 363233875827271.

It is a weak prime.

It is an emirp because it is prime and its reverse (363233875827271) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172728578332363 is a prime.

It is not a weakly prime, because it can be changed into another prime (172728578332393) 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 as a sum of consecutive naturals, namely, 86364289166181 + 86364289166182.

It is an arithmetic number, because the mean of its divisors is an integer number (86364289166182).

Almost surely, 2^{172728578332363} is an apocalyptic number.

172728578332363 is a deficient number, since it is larger than the sum of its proper divisors (1).

172728578332363 is an equidigital number, since it uses as much as digits as its factorization.

172728578332363 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 426746880, while the sum is 67.

The spelling of 172728578332363 in words is "one hundred seventy-two trillion, seven hundred twenty-eight billion, five hundred seventy-eight million, three hundred thirty-two thousand, three hundred sixty-three".