19662706090229 has 2 divisors, whose sum is σ = 19662706090230. Its totient is φ = 19662706090228.

The previous prime is 19662706090199. The next prime is 19662706090241. The reversal of 19662706090229 is 92209060726691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19662706090225 + 4 = 4434265^2 + 2^2 .

It is a cyclic number.

It is not a de Polignac number, because 19662706090229 - 2⁸ = 19662706089973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19662706090129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9831353045114 + 9831353045115.

It is an arithmetic number, because the mean of its divisors is an integer number (9831353045115).

Almost surely, 2^{19662706090229} is an apocalyptic number.

It is an amenable number.

19662706090229 is a deficient number, since it is larger than the sum of its proper divisors (1).

19662706090229 is an equidigital number, since it uses as much as digits as its factorization.

19662706090229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8817984, while the sum is 59.

The spelling of 19662706090229 in words is "nineteen trillion, six hundred sixty-two billion, seven hundred six million, ninety thousand, two hundred twenty-nine".