170017014421 has 2 divisors, whose sum is σ = 170017014422. Its totient is φ = 170017014420.

The previous prime is 170017014403. The next prime is 170017014463. The reversal of 170017014421 is 124410710071.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156785113521 + 13231900900 = 395961^2 + 115030^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-170017014421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 170017014421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (170017014481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85008507210 + 85008507211.

It is an arithmetic number, because the mean of its divisors is an integer number (85008507211).

Almost surely, 2^170017014421 is an apocalyptic number.

It is an amenable number.

170017014421 is a deficient number, since it is larger than the sum of its proper divisors (1).

170017014421 is an equidigital number, since it uses as much as digits as its factorization.

170017014421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1568, while the sum is 28.

Adding to 170017014421 its reverse (124410710071), we get a palindrome (294427724492).

The spelling of 170017014421 in words is "one hundred seventy billion, seventeen million, fourteen thousand, four hundred twenty-one".