172354694101 has 2 divisors, whose sum is σ = 172354694102. Its totient is φ = 172354694100.

The previous prime is 172354694093. The next prime is 172354694117. The reversal of 172354694101 is 101496453271.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 161082625201 + 11272068900 = 401351^2 + 106170^2 .

It is a cyclic number.

It is not a de Polignac number, because 172354694101 - 2³ = 172354694093 is a prime.

It is a super-2 number, since 2×172354694101² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172354694201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86177347050 + 86177347051.

It is an arithmetic number, because the mean of its divisors is an integer number (86177347051).

Almost surely, 2^172354694101 is an apocalyptic number.

It is an amenable number.

172354694101 is a deficient number, since it is larger than the sum of its proper divisors (1).

172354694101 is an equidigital number, since it uses as much as digits as its factorization.

172354694101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 172354694101 in words is "one hundred seventy-two billion, three hundred fifty-four million, six hundred ninety-four thousand, one hundred one".