19209769199701 has 2 divisors, whose sum is σ = 19209769199702. Its totient is φ = 19209769199700.

The previous prime is 19209769199669. The next prime is 19209769199711. The reversal of 19209769199701 is 10799196790291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13219150714225 + 5990618485476 = 3635815^2 + 2447574^2 .

It is a cyclic number.

It is not a de Polignac number, because 19209769199701 - 2⁵ = 19209769199669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19209769199711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9604884599850 + 9604884599851.

It is an arithmetic number, because the mean of its divisors is an integer number (9604884599851).

Almost surely, 2^{19209769199701} is an apocalyptic number.

It is an amenable number.

19209769199701 is a deficient number, since it is larger than the sum of its proper divisors (1).

19209769199701 is an equidigital number, since it uses as much as digits as its factorization.

19209769199701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34720812, while the sum is 70.

The spelling of 19209769199701 in words is "nineteen trillion, two hundred nine billion, seven hundred sixty-nine million, one hundred ninety-nine thousand, seven hundred one".