12195097553 has 2 divisors, whose sum is σ = 12195097554. Its totient is φ = 12195097552.

The previous prime is 12195097531. The next prime is 12195097573. The reversal of 12195097553 is 35579059121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10503585169 + 1691512384 = 102487^2 + 41128^2 .

It is a cyclic number.

It is not a de Polignac number, because 12195097553 - 2¹² = 12195093457 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12195097498 and 12195097507.

It is not a weakly prime, because it can be changed into another prime (12195097573) 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, 6097548776 + 6097548777.

It is an arithmetic number, because the mean of its divisors is an integer number (6097548777).

Almost surely, 2^12195097553 is an apocalyptic number.

It is an amenable number.

12195097553 is a deficient number, since it is larger than the sum of its proper divisors (1).

12195097553 is an equidigital number, since it uses as much as digits as its factorization.

12195097553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 425250, while the sum is 47.

The spelling of 12195097553 in words is "twelve billion, one hundred ninety-five million, ninety-seven thousand, five hundred fifty-three".