197556562944011 has 2 divisors, whose sum is σ = 197556562944012. Its totient is φ = 197556562944010.

The previous prime is 197556562943981. The next prime is 197556562944019. The reversal of 197556562944011 is 110449265655791.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 197556562944011 - 2⁶ = 197556562943947 is a prime.

It is not a weakly prime, because it can be changed into another prime (197556562944019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98778281472005 + 98778281472006.

It is an arithmetic number, because the mean of its divisors is an integer number (98778281472006).

Almost surely, 2^{197556562944011} is an apocalyptic number.

197556562944011 is a deficient number, since it is larger than the sum of its proper divisors (1).

197556562944011 is an equidigital number, since it uses as much as digits as its factorization.

197556562944011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648000, while the sum is 65.

The spelling of 197556562944011 in words is "one hundred ninety-seven trillion, five hundred fifty-six billion, five hundred sixty-two million, nine hundred forty-four thousand, eleven".