172132222237 has 2 divisors, whose sum is σ = 172132222238. Its totient is φ = 172132222236.

The previous prime is 172132222219. The next prime is 172132222267. The reversal of 172132222237 is 732222231271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150679054276 + 21453167961 = 388174^2 + 146469^2 .

It is an emirp because it is prime and its reverse (732222231271) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172132222237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172132222267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86066111118 + 86066111119.

It is an arithmetic number, because the mean of its divisors is an integer number (86066111119).

Almost surely, 2^172132222237 is an apocalyptic number.

It is an amenable number.

172132222237 is a deficient number, since it is larger than the sum of its proper divisors (1).

172132222237 is an equidigital number, since it uses as much as digits as its factorization.

172132222237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 34.

The spelling of 172132222237 in words is "one hundred seventy-two billion, one hundred thirty-two million, two hundred twenty-two thousand, two hundred thirty-seven".