19662217343 has 8 divisors (see below), whose sum is σ = 19820451840. Its totient is φ = 19504036440.

The previous prime is 19662217313. The next prime is 19662217373. The reversal of 19662217343 is 34371226691.

It is an interprime number because it is at equal distance from previous prime (19662217313) and next prime (19662217373).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19662217343 - 2¹⁰ = 19662216319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19662217294 and 19662217303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19662217313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1075388 + ... + 1093518.

It is an arithmetic number, because the mean of its divisors is an integer number (2477556480).

Almost surely, 2^19662217343 is an apocalyptic number.

19662217343 is a deficient number, since it is larger than the sum of its proper divisors (158234497).

19662217343 is a wasteful number, since it uses less digits than its factorization.

19662217343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26797.

The product of its digits is 326592, while the sum is 44.

The spelling of 19662217343 in words is "nineteen billion, six hundred sixty-two million, two hundred seventeen thousand, three hundred forty-three".