172354694417 has 2 divisors, whose sum is σ = 172354694418. Its totient is φ = 172354694416.

The previous prime is 172354694377. The next prime is 172354694453. The reversal of 172354694417 is 714496453271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138264241921 + 34090452496 = 371839^2 + 184636^2 .

It is a cyclic number.

It is not a de Polignac number, because 172354694417 - 2¹⁴ = 172354678033 is a prime.

It is a super-2 number, since 2×172354694417² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (172354694467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86177347208 + 86177347209.

It is an arithmetic number, because the mean of its divisors is an integer number (86177347209).

Almost surely, 2^172354694417 is an apocalyptic number.

It is an amenable number.

172354694417 is a deficient number, since it is larger than the sum of its proper divisors (1).

172354694417 is an equidigital number, since it uses as much as digits as its factorization.

172354694417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5080320, while the sum is 53.

The spelling of 172354694417 in words is "one hundred seventy-two billion, three hundred fifty-four million, six hundred ninety-four thousand, four hundred seventeen".