19569370097 has 2 divisors, whose sum is σ = 19569370098. Its totient is φ = 19569370096.

The previous prime is 19569370043. The next prime is 19569370103. The reversal of 19569370097 is 79007396591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19276823281 + 292546816 = 138841^2 + 17104^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19569370097 is a prime.

It is not a weakly prime, because it can be changed into another prime (19569370297) 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, 9784685048 + 9784685049.

It is an arithmetic number, because the mean of its divisors is an integer number (9784685049).

Almost surely, 2^19569370097 is an apocalyptic number.

It is an amenable number.

19569370097 is a deficient number, since it is larger than the sum of its proper divisors (1).

19569370097 is an equidigital number, since it uses as much as digits as its factorization.

19569370097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3214890, while the sum is 56.

The spelling of 19569370097 in words is "nineteen billion, five hundred sixty-nine million, three hundred seventy thousand, ninety-seven".