505105006155 has 16 divisors (see below), whose sum is σ = 823416464160. Its totient is φ = 264306518528.

The previous prime is 505105006139. The next prime is 505105006169. The reversal of 505105006155 is 551600501505.

It is a cyclic number.

It is not a de Polignac number, because 505105006155 - 2⁴ = 505105006139 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 317675310 + ... + 317676899.

It is an arithmetic number, because the mean of its divisors is an integer number (51463529010).

Almost surely, 2^505105006155 is an apocalyptic number.

505105006155 is a deficient number, since it is larger than the sum of its proper divisors (318311458005).

505105006155 is a wasteful number, since it uses less digits than its factorization.

505105006155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635352270.

The product of its (nonzero) digits is 18750, while the sum is 33.

The spelling of 505105006155 in words is "five hundred five billion, one hundred five million, six thousand, one hundred fifty-five".