1105105005551 has 2 divisors, whose sum is σ = 1105105005552. Its totient is φ = 1105105005550.

The previous prime is 1105105005547. The next prime is 1105105005569. The reversal of 1105105005551 is 1555005015011.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1105105005551 - 2² = 1105105005547 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1105105005751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552552502775 + 552552502776.

It is an arithmetic number, because the mean of its divisors is an integer number (552552502776).

Almost surely, 2^{1105105005551} is an apocalyptic number.

1105105005551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1105105005551 is an equidigital number, since it uses as much as digits as its factorization.

1105105005551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3125, while the sum is 29.

The spelling of 1105105005551 in words is "one trillion, one hundred five billion, one hundred five million, five thousand, five hundred fifty-one".