19769457968927 has 2 divisors, whose sum is σ = 19769457968928. Its totient is φ = 19769457968926.

The previous prime is 19769457968917. The next prime is 19769457968933. The reversal of 19769457968927 is 72986975496791.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19769457968927 - 2⁶ = 19769457968863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19769457968917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9884728984463 + 9884728984464.

It is an arithmetic number, because the mean of its divisors is an integer number (9884728984464).

Almost surely, 2^{19769457968927} is an apocalyptic number.

19769457968927 is a deficient number, since it is larger than the sum of its proper divisors (1).

19769457968927 is an equidigital number, since it uses as much as digits as its factorization.

19769457968927 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25924872960, while the sum is 89.

The spelling of 19769457968927 in words is "nineteen trillion, seven hundred sixty-nine billion, four hundred fifty-seven million, nine hundred sixty-eight thousand, nine hundred twenty-seven".