11661202650203 has 2 divisors, whose sum is σ = 11661202650204. Its totient is φ = 11661202650202.

The previous prime is 11661202650133. The next prime is 11661202650211. The reversal of 11661202650203 is 30205620216611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11661202650203 - 2²⁰ = 11661201601627 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (11661202655203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5830601325101 + 5830601325102.

It is an arithmetic number, because the mean of its divisors is an integer number (5830601325102).

Almost surely, 2^{11661202650203} is an apocalyptic number.

11661202650203 is a deficient number, since it is larger than the sum of its proper divisors (1).

11661202650203 is an equidigital number, since it uses as much as digits as its factorization.

11661202650203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

Adding to 11661202650203 its reverse (30205620216611), we get a palindrome (41866822866814).

The spelling of 11661202650203 in words is "eleven trillion, six hundred sixty-one billion, two hundred two million, six hundred fifty thousand, two hundred three".