171892078133 has 2 divisors, whose sum is σ = 171892078134. Its totient is φ = 171892078132.

The previous prime is 171892078091. The next prime is 171892078159. The reversal of 171892078133 is 331870298171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152581640689 + 19310437444 = 390617^2 + 138962^2 .

It is an emirp because it is prime and its reverse (331870298171) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 171892078133 - 2¹⁴ = 171892061749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171892078933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85946039066 + 85946039067.

It is an arithmetic number, because the mean of its divisors is an integer number (85946039067).

Almost surely, 2^171892078133 is an apocalyptic number.

It is an amenable number.

171892078133 is a deficient number, since it is larger than the sum of its proper divisors (1).

171892078133 is an equidigital number, since it uses as much as digits as its factorization.

171892078133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 50.

The spelling of 171892078133 in words is "one hundred seventy-one billion, eight hundred ninety-two million, seventy-eight thousand, one hundred thirty-three".