1100605505551 has 2 divisors, whose sum is σ = 1100605505552. Its totient is φ = 1100605505550.

The previous prime is 1100605505537. The next prime is 1100605505557. The reversal of 1100605505551 is 1555055060011.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1100605505551 - 2¹³ = 1100605497359 is a prime.

It is a super-2 number, since 2×1100605505551² (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 (1100605505557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550302752775 + 550302752776.

It is an arithmetic number, because the mean of its divisors is an integer number (550302752776).

Almost surely, 2^{1100605505551} is an apocalyptic number.

1100605505551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100605505551 is an equidigital number, since it uses as much as digits as its factorization.

1100605505551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18750, while the sum is 34.

The spelling of 1100605505551 in words is "one trillion, one hundred billion, six hundred five million, five hundred five thousand, five hundred fifty-one".