11005505573 has 2 divisors, whose sum is σ = 11005505574. Its totient is φ = 11005505572.

The previous prime is 11005505549. The next prime is 11005505617. The reversal of 11005505573 is 37550550011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10911473764 + 94031809 = 104458^2 + 9697^2 .

It is a cyclic number.

It is not a de Polignac number, because 11005505573 - 2⁸ = 11005505317 is a prime.

It is a super-2 number, since 2×11005505573² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11005505473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5502752786 + 5502752787.

It is an arithmetic number, because the mean of its divisors is an integer number (5502752787).

Almost surely, 2^11005505573 is an apocalyptic number.

It is an amenable number.

11005505573 is a deficient number, since it is larger than the sum of its proper divisors (1).

11005505573 is an equidigital number, since it uses as much as digits as its factorization.

11005505573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13125, while the sum is 32.

The spelling of 11005505573 in words is "eleven billion, five million, five hundred five thousand, five hundred seventy-three".