17720303423 has 2 divisors, whose sum is σ = 17720303424. Its totient is φ = 17720303422.

The previous prime is 17720303411. The next prime is 17720303501. The reversal of 17720303423 is 32430302771.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 17720303423 - 2⁴ = 17720303407 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 17720303423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17720303023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8860151711 + 8860151712.

It is an arithmetic number, because the mean of its divisors is an integer number (8860151712).

Almost surely, 2^17720303423 is an apocalyptic number.

17720303423 is a deficient number, since it is larger than the sum of its proper divisors (1).

17720303423 is an equidigital number, since it uses as much as digits as its factorization.

17720303423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 32.

The spelling of 17720303423 in words is "seventeen billion, seven hundred twenty million, three hundred three thousand, four hundred twenty-three".