19766772940163 has 2 divisors, whose sum is σ = 19766772940164. Its totient is φ = 19766772940162.

The previous prime is 19766772940139. The next prime is 19766772940207. The reversal of 19766772940163 is 36104927766791.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19766772940163 - 2¹² = 19766772936067 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19766772940093 and 19766772940102.

It is not a weakly prime, because it can be changed into another prime (19766772940763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9883386470081 + 9883386470082.

It is an arithmetic number, because the mean of its divisors is an integer number (9883386470082).

Almost surely, 2^{19766772940163} is an apocalyptic number.

19766772940163 is a deficient number, since it is larger than the sum of its proper divisors (1).

19766772940163 is an equidigital number, since it uses as much as digits as its factorization.

19766772940163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144027072, while the sum is 68.

The spelling of 19766772940163 in words is "nineteen trillion, seven hundred sixty-six billion, seven hundred seventy-two million, nine hundred forty thousand, one hundred sixty-three".