1105605555511 has 2 divisors, whose sum is σ = 1105605555512. Its totient is φ = 1105605555510.

The previous prime is 1105605555497. The next prime is 1105605555517. The reversal of 1105605555511 is 1155555065011.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1105605555511 is a prime.

It is a super-2 number, since 2×1105605555511² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1105605555517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552802777755 + 552802777756.

It is an arithmetic number, because the mean of its divisors is an integer number (552802777756).

Almost surely, 2^{1105605555511} is an apocalyptic number.

1105605555511 is a deficient number, since it is larger than the sum of its proper divisors (1).

1105605555511 is an equidigital number, since it uses as much as digits as its factorization.

1105605555511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93750, while the sum is 40.

The spelling of 1105605555511 in words is "one trillion, one hundred five billion, six hundred five million, five hundred fifty-five thousand, five hundred eleven".