172214642137 has 2 divisors, whose sum is σ = 172214642138. Its totient is φ = 172214642136.

The previous prime is 172214642113. The next prime is 172214642177. The reversal of 172214642137 is 731246412271.

It is a happy number.

It is an a-pointer prime, because the next prime (172214642177) can be obtained adding 172214642137 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 161800235536 + 10414406601 = 402244^2 + 102051^2 .

It is a cyclic number.

It is not a de Polignac number, because 172214642137 - 2³¹ = 170067158489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 172214642137.

It is not a weakly prime, because it can be changed into another prime (172214642177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86107321068 + 86107321069.

It is an arithmetic number, because the mean of its divisors is an integer number (86107321069).

Almost surely, 2^172214642137 is an apocalyptic number.

It is an amenable number.

172214642137 is a deficient number, since it is larger than the sum of its proper divisors (1).

172214642137 is an equidigital number, since it uses as much as digits as its factorization.

172214642137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 40.

The spelling of 172214642137 in words is "one hundred seventy-two billion, two hundred fourteen million, six hundred forty-two thousand, one hundred thirty-seven".