19928143306069 has 2 divisors, whose sum is σ = 19928143306070. Its totient is φ = 19928143306068.

The previous prime is 19928143306007. The next prime is 19928143306073. The reversal of 19928143306069 is 96060334182991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17322701823025 + 2605441483044 = 4162055^2 + 1614138^2 .

It is a cyclic number.

It is not a de Polignac number, because 19928143306069 - 2⁹ = 19928143305557 is a prime.

It is a super-2 number, since 2×19928143306069² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19928143305998 and 19928143306016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19928143306769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9964071653034 + 9964071653035.

It is an arithmetic number, because the mean of its divisors is an integer number (9964071653035).

Almost surely, 2^{19928143306069} is an apocalyptic number.

It is an amenable number.

19928143306069 is a deficient number, since it is larger than the sum of its proper divisors (1).

19928143306069 is an equidigital number, since it uses as much as digits as its factorization.

19928143306069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15116544, while the sum is 61.

The spelling of 19928143306069 in words is "nineteen trillion, nine hundred twenty-eight billion, one hundred forty-three million, three hundred six thousand, sixty-nine".