72227257163 has 2 divisors, whose sum is σ = 72227257164. Its totient is φ = 72227257162.

The previous prime is 72227257061. The next prime is 72227257177. The reversal of 72227257163 is 36175272227.

It is a strong prime.

It is an emirp because it is prime and its reverse (36175272227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72227257163 - 2³⁰ = 71153515339 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (72227254163) by changing a digit.

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, 36113628581 + 36113628582.

It is an arithmetic number, because the mean of its divisors is an integer number (36113628582).

Almost surely, 2^72227257163 is an apocalyptic number.

72227257163 is a deficient number, since it is larger than the sum of its proper divisors (1).

72227257163 is an equidigital number, since it uses as much as digits as its factorization.

72227257163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 493920, while the sum is 44.

The spelling of 72227257163 in words is "seventy-two billion, two hundred twenty-seven million, two hundred fifty-seven thousand, one hundred sixty-three".