17162164421 has 8 divisors (see below), whose sum is σ = 17205850200. Its totient is φ = 17118535680.

The previous prime is 17162164387. The next prime is 17162164423. The reversal of 17162164421 is 12446126171.

It can be written as a sum of positive squares in 4 ways, for example, as 7770422500 + 9391741921 = 88150^2 + 96911^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17162164421 is a prime.

It is a super-2 number, since 2×17162164421² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17162164423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 624041 + ... + 650961.

It is an arithmetic number, because the mean of its divisors is an integer number (2150731275).

Almost surely, 2^17162164421 is an apocalyptic number.

It is an amenable number.

17162164421 is a deficient number, since it is larger than the sum of its proper divisors (43685779).

17162164421 is an equidigital number, since it uses as much as digits as its factorization.

17162164421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28519.

The product of its digits is 16128, while the sum is 35.

The spelling of 17162164421 in words is "seventeen billion, one hundred sixty-two million, one hundred sixty-four thousand, four hundred twenty-one".