17020420220640 has 96 divisors (see below), whose sum is σ = 56436130235520. Its totient is φ = 4299895632384.

The previous prime is 17020420220591. The next prime is 17020420220641. The reversal of 17020420220640 is 4602202402071.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 17020420220598 and 17020420220607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17020420220641) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 933127954 + ... + 933146193.

It is an arithmetic number, because the mean of its divisors is an integer number (587876356620).

Almost surely, 2^{17020420220640} is an apocalyptic number.

17020420220640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

17020420220640 is an abundant number, since it is smaller than the sum of its proper divisors (39415710014880).

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

17020420220640 is a wasteful number, since it uses less digits than its factorization.

17020420220640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1866274184 (or 1866274176 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The spelling of 17020420220640 in words is "seventeen trillion, twenty billion, four hundred twenty million, two hundred twenty thousand, six hundred forty".