605555561011 has 4 divisors (see below), whose sum is σ = 605578894624. Its totient is φ = 605532227400.

The previous prime is 605555560979. The next prime is 605555561021. The reversal of 605555561011 is 110165555506.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110165555506 = 2 ⋅55082777753.

It is a cyclic number.

It is not a de Polignac number, because 605555561011 - 2⁵ = 605555560979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (605555561021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11627835 + ... + 11679796.

It is an arithmetic number, because the mean of its divisors is an integer number (151394723656).

Almost surely, 2^605555561011 is an apocalyptic number.

605555561011 is a deficient number, since it is larger than the sum of its proper divisors (23333613).

605555561011 is a wasteful number, since it uses less digits than its factorization.

605555561011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23333612.

The product of its (nonzero) digits is 112500, while the sum is 40.

The spelling of 605555561011 in words is "six hundred five billion, five hundred fifty-five million, five hundred sixty-one thousand, eleven".