19675589497 has 2 divisors, whose sum is σ = 19675589498. Its totient is φ = 19675589496.

The previous prime is 19675589473. The next prime is 19675589503. The reversal of 19675589497 is 79498557691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19675392361 + 197136 = 140269^2 + 444^2 .

It is a cyclic number.

It is not a de Polignac number, because 19675589497 - 2⁷ = 19675589369 is a prime.

It is not a weakly prime, because it can be changed into another prime (19675589447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9837794748 + 9837794749.

It is an arithmetic number, because the mean of its divisors is an integer number (9837794749).

Almost surely, 2^19675589497 is an apocalyptic number.

It is an amenable number.

19675589497 is a deficient number, since it is larger than the sum of its proper divisors (1).

19675589497 is an equidigital number, since it uses as much as digits as its factorization.

19675589497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 171460800, while the sum is 70.

The spelling of 19675589497 in words is "nineteen billion, six hundred seventy-five million, five hundred eighty-nine thousand, four hundred ninety-seven".