17340508421 has 2 divisors, whose sum is σ = 17340508422. Its totient is φ = 17340508420.

The previous prime is 17340508417. The next prime is 17340508447. The reversal of 17340508421 is 12480504371.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14259703396 + 3080805025 = 119414^2 + 55505^2 .

It is a cyclic number.

It is not a de Polignac number, because 17340508421 - 2² = 17340508417 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17340508411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8670254210 + 8670254211.

It is an arithmetic number, because the mean of its divisors is an integer number (8670254211).

Almost surely, 2^17340508421 is an apocalyptic number.

It is an amenable number.

17340508421 is a deficient number, since it is larger than the sum of its proper divisors (1).

17340508421 is an equidigital number, since it uses as much as digits as its factorization.

17340508421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 35.

It can be divided in two parts, 1734050 and 8421, that added together give a palindrome (1742471).

The spelling of 17340508421 in words is "seventeen billion, three hundred forty million, five hundred eight thousand, four hundred twenty-one".