19780593311 has 2 divisors, whose sum is σ = 19780593312. Its totient is φ = 19780593310.

The previous prime is 19780593299. The next prime is 19780593317. The reversal of 19780593311 is 11339508791.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19780593311 - 2⁶ = 19780593247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19780593317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9890296655 + 9890296656.

It is an arithmetic number, because the mean of its divisors is an integer number (9890296656).

Almost surely, 2^19780593311 is an apocalyptic number.

19780593311 is a deficient number, since it is larger than the sum of its proper divisors (1).

19780593311 is an equidigital number, since it uses as much as digits as its factorization.

19780593311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204120, while the sum is 47.

The spelling of 19780593311 in words is "nineteen billion, seven hundred eighty million, five hundred ninety-three thousand, three hundred eleven".