17020421055444 has 24 divisors (see below), whose sum is σ = 39715943248800. Its totient is φ = 5673241191904.

The previous prime is 17020421055439. The next prime is 17020421055461. The reversal of 17020421055444 is 44455012402071.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28756494 + ... + 29342405.

It is an arithmetic number, because the mean of its divisors is an integer number (1654830968700).

Almost surely, 2^{17020421055444} is an apocalyptic number.

It is an amenable number.

17020421055444 is an abundant number, since it is smaller than the sum of its proper divisors (22695522193356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

17020421055444 is a wasteful number, since it uses less digits than its factorization.

17020421055444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58123319 (or 58123317 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 39.

The spelling of 17020421055444 in words is "seventeen trillion, twenty billion, four hundred twenty-one million, fifty-five thousand, four hundred forty-four".