173142840503 has 2 divisors, whose sum is σ = 173142840504. Its totient is φ = 173142840502.

The previous prime is 173142840487. The next prime is 173142840511. The reversal of 173142840503 is 305048241371.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 173142840503 - 2⁴ = 173142840487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (173142840523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86571420251 + 86571420252.

It is an arithmetic number, because the mean of its divisors is an integer number (86571420252).

Almost surely, 2^173142840503 is an apocalyptic number.

173142840503 is a deficient number, since it is larger than the sum of its proper divisors (1).

173142840503 is an equidigital number, since it uses as much as digits as its factorization.

173142840503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 173142840503 in words is "one hundred seventy-three billion, one hundred forty-two million, eight hundred forty thousand, five hundred three".