655011011 has 2 divisors, whose sum is σ = 655011012. Its totient is φ = 655011010.

The previous prime is 655011001. The next prime is 655011029. The reversal of 655011011 is 110110556.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-655011011 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (655011001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327505505 + 327505506.

It is an arithmetic number, because the mean of its divisors is an integer number (327505506).

Almost surely, 2^655011011 is an apocalyptic number.

655011011 is a deficient number, since it is larger than the sum of its proper divisors (1).

655011011 is an equidigital number, since it uses as much as digits as its factorization.

655011011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 150, while the sum is 20.

The square root of 655011011 is about 25593.1829009211. The cubic root of 655011011 is about 868.4594266837.

Adding to 655011011 its reverse (110110556), we get a palindrome (765121567).

The spelling of 655011011 in words is "six hundred fifty-five million, eleven thousand, eleven".