505105505011 has 4 divisors (see below), whose sum is σ = 505154982024. Its totient is φ = 505056028000.

The previous prime is 505105504979. The next prime is 505105505131. The reversal of 505105505011 is 110505501505.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 505105505011 - 2⁵ = 505105504979 is a prime.

It is a super-3 number, since 3×505105505011³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505105515011) 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, 24723190 + ... + 24743611.

It is an arithmetic number, because the mean of its divisors is an integer number (126288745506).

Almost surely, 2^505105505011 is an apocalyptic number.

505105505011 is a deficient number, since it is larger than the sum of its proper divisors (49477013).

505105505011 is a wasteful number, since it uses less digits than its factorization.

505105505011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49477012.

The product of its (nonzero) digits is 3125, while the sum is 28.

The spelling of 505105505011 in words is "five hundred five billion, one hundred five million, five hundred five thousand, eleven".