1722216038423 has 2 divisors, whose sum is σ = 1722216038424. Its totient is φ = 1722216038422.

The previous prime is 1722216038383. The next prime is 1722216038443. The reversal of 1722216038423 is 3248306122271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1722216038423 - 2¹² = 1722216034327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1722216038443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 861108019211 + 861108019212.

It is an arithmetic number, because the mean of its divisors is an integer number (861108019212).

Almost surely, 2^{1722216038423} is an apocalyptic number.

1722216038423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1722216038423 is an equidigital number, since it uses as much as digits as its factorization.

1722216038423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 41.

The spelling of 1722216038423 in words is "one trillion, seven hundred twenty-two billion, two hundred sixteen million, thirty-eight thousand, four hundred twenty-three".