171208838147 has 2 divisors, whose sum is σ = 171208838148. Its totient is φ = 171208838146.

The previous prime is 171208838081. The next prime is 171208838153. The reversal of 171208838147 is 741838802171.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 171208838147 - 2¹⁶ = 171208772611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 171208838095 and 171208838104.

It is not a weakly prime, because it can be changed into another prime (171208838347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85604419073 + 85604419074.

It is an arithmetic number, because the mean of its divisors is an integer number (85604419074).

Almost surely, 2^171208838147 is an apocalyptic number.

171208838147 is a deficient number, since it is larger than the sum of its proper divisors (1).

171208838147 is an equidigital number, since it uses as much as digits as its factorization.

171208838147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 602112, while the sum is 50.

The spelling of 171208838147 in words is "one hundred seventy-one billion, two hundred eight million, eight hundred thirty-eight thousand, one hundred forty-seven".