19949007056779 has 2 divisors, whose sum is σ = 19949007056780. Its totient is φ = 19949007056778.

The previous prime is 19949007056773. The next prime is 19949007056837. The reversal of 19949007056779 is 97765070094991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19949007056779 - 2⁹ = 19949007056267 is a prime.

It is not a weakly prime, because it can be changed into another prime (19949007056773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9974503528389 + 9974503528390.

It is an arithmetic number, because the mean of its divisors is an integer number (9974503528390).

Almost surely, 2^{19949007056779} is an apocalyptic number.

19949007056779 is a deficient number, since it is larger than the sum of its proper divisors (1).

19949007056779 is an equidigital number, since it uses as much as digits as its factorization.

19949007056779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270050760, while the sum is 73.

The spelling of 19949007056779 in words is "nineteen trillion, nine hundred forty-nine billion, seven million, fifty-six thousand, seven hundred seventy-nine".