505406210505 has 16 divisors (see below), whose sum is σ = 924171356544. Its totient is φ = 231042839040.

The previous prime is 505406210497. The next prime is 505406210509. The reversal of 505406210505 is 505012604505.

505406210505 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 505406210505 - 2³ = 505406210497 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (505406210509) 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, 2406696136 + ... + 2406696345.

It is an arithmetic number, because the mean of its divisors is an integer number (57760709784).

Almost surely, 2^505406210505 is an apocalyptic number.

It is an amenable number.

505406210505 is a deficient number, since it is larger than the sum of its proper divisors (418765146039).

505406210505 is a wasteful number, since it uses less digits than its factorization.

505406210505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4813392496.

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 505406210505 in words is "five hundred five billion, four hundred six million, two hundred ten thousand, five hundred five".