505555050511 has 16 divisors (see below), whose sum is σ = 611786274624. Its totient is φ = 407827943424.

The previous prime is 505555050509. The next prime is 505555050541. The reversal of 505555050511 is 115050555505.

It is a cyclic number.

It is not a de Polignac number, because 505555050511 - 2¹ = 505555050509 is a prime.

It is a super-2 number, since 2×505555050511² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505555050541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4224151 + ... + 4342183.

It is an arithmetic number, because the mean of its divisors is an integer number (38236642164).

Almost surely, 2^505555050511 is an apocalyptic number.

505555050511 is a deficient number, since it is larger than the sum of its proper divisors (106231224113).

505555050511 is a wasteful number, since it uses less digits than its factorization.

505555050511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154050.

The product of its (nonzero) digits is 78125, while the sum is 37.

The spelling of 505555050511 in words is "five hundred five billion, five hundred fifty-five million, fifty thousand, five hundred eleven".