11800609782497 has 2 divisors, whose sum is σ = 11800609782498. Its totient is φ = 11800609782496.

The previous prime is 11800609782449. The next prime is 11800609782517. The reversal of 11800609782497 is 79428790600811.

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., 7455215219776 + 4345394562721 = 2730424^2 + 2084561^2 .

It is a cyclic number.

It is not a de Polignac number, because 11800609782497 - 2⁶ = 11800609782433 is a prime.

It is not a weakly prime, because it can be changed into another prime (11800609782427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5900304891248 + 5900304891249.

It is an arithmetic number, because the mean of its divisors is an integer number (5900304891249).

Almost surely, 2^{11800609782497} is an apocalyptic number.

It is an amenable number.

11800609782497 is a deficient number, since it is larger than the sum of its proper divisors (1).

11800609782497 is an equidigital number, since it uses as much as digits as its factorization.

11800609782497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12192768, while the sum is 62.

The spelling of 11800609782497 in words is "eleven trillion, eight hundred billion, six hundred nine million, seven hundred eighty-two thousand, four hundred ninety-seven".