172282187213 has 2 divisors, whose sum is σ = 172282187214. Its totient is φ = 172282187212.

The previous prime is 172282187177. The next prime is 172282187237. The reversal of 172282187213 is 312781282271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157670938084 + 14611249129 = 397078^2 + 120877^2 .

It is an emirp because it is prime and its reverse (312781282271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172282187213 - 2⁸ = 172282186957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172282186213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86141093606 + 86141093607.

It is an arithmetic number, because the mean of its divisors is an integer number (86141093607).

Almost surely, 2^172282187213 is an apocalyptic number.

It is an amenable number.

172282187213 is a deficient number, since it is larger than the sum of its proper divisors (1).

172282187213 is an equidigital number, since it uses as much as digits as its factorization.

172282187213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 150528, while the sum is 44.

The spelling of 172282187213 in words is "one hundred seventy-two billion, two hundred eighty-two million, one hundred eighty-seven thousand, two hundred thirteen".