605555505011 has 4 divisors (see below), whose sum is σ = 637426847400. Its totient is φ = 573684162624.

The previous prime is 605555504987. The next prime is 605555505029. The reversal of 605555505011 is 110505555506.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110505555506 = 2 ⋅55252777753.

It is a de Polignac number, because none of the positive numbers 2^k-605555505011 is a prime.

It is a super-2 number, since 2×605555505011² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (605555501011) 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, 15935671166 + ... + 15935671203.

It is an arithmetic number, because the mean of its divisors is an integer number (159356711850).

Almost surely, 2^605555505011 is an apocalyptic number.

605555505011 is a deficient number, since it is larger than the sum of its proper divisors (31871342389).

605555505011 is a wasteful number, since it uses less digits than its factorization.

605555505011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31871342388.

The product of its (nonzero) digits is 93750, while the sum is 38.

The spelling of 605555505011 in words is "six hundred five billion, five hundred fifty-five million, five hundred five thousand, eleven".