10811658390209 has 2 divisors, whose sum is σ = 10811658390210. Its totient is φ = 10811658390208.

The previous prime is 10811658390167. The next prime is 10811658390217. The reversal of 10811658390209 is 90209385611801.

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., 9719273880625 + 1092384509584 = 3117575^2 + 1045172^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10811658390209 is a prime.

It is not a weakly prime, because it can be changed into another prime (10811658390259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5405829195104 + 5405829195105.

It is an arithmetic number, because the mean of its divisors is an integer number (5405829195105).

Almost surely, 2^{10811658390209} is an apocalyptic number.

It is an amenable number.

10811658390209 is a deficient number, since it is larger than the sum of its proper divisors (1).

10811658390209 is an equidigital number, since it uses as much as digits as its factorization.

10811658390209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 933120, while the sum is 53.

The spelling of 10811658390209 in words is "ten trillion, eight hundred eleven billion, six hundred fifty-eight million, three hundred ninety thousand, two hundred nine".