173908772101 has 2 divisors, whose sum is σ = 173908772102. Its totient is φ = 173908772100.

The previous prime is 173908772099. The next prime is 173908772123. The reversal of 173908772101 is 101277809371.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132331523076 + 41577249025 = 363774^2 + 203905^2 .

It is a cyclic number.

It is not a de Polignac number, because 173908772101 - 2¹ = 173908772099 is a prime.

It is a super-2 number, since 2×173908772101² (a number of 23 digits) contains 22 as substring.

Together with 173908772099, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (173908772171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86954386050 + 86954386051.

It is an arithmetic number, because the mean of its divisors is an integer number (86954386051).

Almost surely, 2^173908772101 is an apocalyptic number.

It is an amenable number.

173908772101 is a deficient number, since it is larger than the sum of its proper divisors (1).

173908772101 is an equidigital number, since it uses as much as digits as its factorization.

173908772101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 148176, while the sum is 46.

The spelling of 173908772101 in words is "one hundred seventy-three billion, nine hundred eight million, seven hundred seventy-two thousand, one hundred one".