19766867794027 has 2 divisors, whose sum is σ = 19766867794028. Its totient is φ = 19766867794026.

The previous prime is 19766867793997. The next prime is 19766867794039. The reversal of 19766867794027 is 72049776866791.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19766867794027 is a prime.

It is not a weakly prime, because it can be changed into another prime (19766867794097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9883433897013 + 9883433897014.

It is an arithmetic number, because the mean of its divisors is an integer number (9883433897014).

Almost surely, 2^{19766867794027} is an apocalyptic number.

19766867794027 is a deficient number, since it is larger than the sum of its proper divisors (1).

19766867794027 is an equidigital number, since it uses as much as digits as its factorization.

19766867794027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688505344, while the sum is 79.

The spelling of 19766867794027 in words is "nineteen trillion, seven hundred sixty-six billion, eight hundred sixty-seven million, seven hundred ninety-four thousand, twenty-seven".