17020420501173 has 4 divisors (see below), whose sum is σ = 22693894001568. Its totient is φ = 11346947000780.

The previous prime is 17020420501171. The next prime is 17020420501177. The reversal of 17020420501173 is 37110502402071.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 17020420501173 - 2¹ = 17020420501171 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17020420501171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2836736750193 + ... + 2836736750198.

It is an arithmetic number, because the mean of its divisors is an integer number (5673473500392).

Almost surely, 2^{17020420501173} is an apocalyptic number.

It is an amenable number.

17020420501173 is a deficient number, since it is larger than the sum of its proper divisors (5673473500395).

17020420501173 is an equidigital number, since it uses as much as digits as its factorization.

17020420501173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5673473500394.

The product of its (nonzero) digits is 11760, while the sum is 33.

The spelling of 17020420501173 in words is "seventeen trillion, twenty billion, four hundred twenty million, five hundred one thousand, one hundred seventy-three".