171201293489 has 2 divisors, whose sum is σ = 171201293490. Its totient is φ = 171201293488.

The previous prime is 171201293443. The next prime is 171201293509. The reversal of 171201293489 is 984392102171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156325344400 + 14875949089 = 395380^2 + 121967^2 .

It is a cyclic number.

It is not a de Polignac number, because 171201293489 - 2¹² = 171201289393 is a prime.

It is not a weakly prime, because it can be changed into another prime (171201292489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85600646744 + 85600646745.

It is an arithmetic number, because the mean of its divisors is an integer number (85600646745).

Almost surely, 2^171201293489 is an apocalyptic number.

It is an amenable number.

171201293489 is a deficient number, since it is larger than the sum of its proper divisors (1).

171201293489 is an equidigital number, since it uses as much as digits as its factorization.

171201293489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 47.

The spelling of 171201293489 in words is "one hundred seventy-one billion, two hundred one million, two hundred ninety-three thousand, four hundred eighty-nine".