505166542505 has 16 divisors (see below), whose sum is σ = 607390660800. Its totient is φ = 403339879488.

The previous prime is 505166542499. The next prime is 505166542567. The reversal of 505166542505 is 505245661505.

It is a cyclic number.

It is not a de Polignac number, because 505166542505 - 2³⁰ = 504092800681 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8164214 + ... + 8225856.

It is an arithmetic number, because the mean of its divisors is an integer number (37961916300).

Almost surely, 2^505166542505 is an apocalyptic number.

It is an amenable number.

505166542505 is a deficient number, since it is larger than the sum of its proper divisors (102224118295).

505166542505 is a wasteful number, since it uses less digits than its factorization.

505166542505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64840.

The product of its (nonzero) digits is 900000, while the sum is 44.

The spelling of 505166542505 in words is "five hundred five billion, one hundred sixty-six million, five hundred forty-two thousand, five hundred five".