17473872643 has 2 divisors, whose sum is σ = 17473872644. Its totient is φ = 17473872642.

The previous prime is 17473872613. The next prime is 17473872653. The reversal of 17473872643 is 34627837471.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 17473872643 - 2⁹ = 17473872131 is a prime.

It is not a weakly prime, because it can be changed into another prime (17473872613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8736936321 + 8736936322.

It is an arithmetic number, because the mean of its divisors is an integer number (8736936322).

Almost surely, 2^17473872643 is an apocalyptic number.

17473872643 is a deficient number, since it is larger than the sum of its proper divisors (1).

17473872643 is an equidigital number, since it uses as much as digits as its factorization.

17473872643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4741632, while the sum is 52.

The spelling of 17473872643 in words is "seventeen billion, four hundred seventy-three million, eight hundred seventy-two thousand, six hundred forty-three".