17640057223 has 2 divisors, whose sum is σ = 17640057224. Its totient is φ = 17640057222.

The previous prime is 17640057179. The next prime is 17640057229. The reversal of 17640057223 is 32275004671.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17640057223 is a prime.

It is a super-2 number, since 2×17640057223² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17640057229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8820028611 + 8820028612.

It is an arithmetic number, because the mean of its divisors is an integer number (8820028612).

Almost surely, 2^17640057223 is an apocalyptic number.

17640057223 is a deficient number, since it is larger than the sum of its proper divisors (1).

17640057223 is an equidigital number, since it uses as much as digits as its factorization.

17640057223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70560, while the sum is 37.

The spelling of 17640057223 in words is "seventeen billion, six hundred forty million, fifty-seven thousand, two hundred twenty-three".