17478220343 has 2 divisors, whose sum is σ = 17478220344. Its totient is φ = 17478220342.

The previous prime is 17478220339. The next prime is 17478220369. The reversal of 17478220343 is 34302287471.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 17478220343 - 2² = 17478220339 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 17478220343.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17478220303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8739110171 + 8739110172.

It is an arithmetic number, because the mean of its divisors is an integer number (8739110172).

Almost surely, 2^17478220343 is an apocalyptic number.

17478220343 is a deficient number, since it is larger than the sum of its proper divisors (1).

17478220343 is an equidigital number, since it uses as much as digits as its factorization.

17478220343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 41.

The spelling of 17478220343 in words is "seventeen billion, four hundred seventy-eight million, two hundred twenty thousand, three hundred forty-three".