505430420885 has 16 divisors (see below), whose sum is σ = 654480624000. Its totient is φ = 372492924480.

The previous prime is 505430420867. The next prime is 505430420909. The reversal of 505430420885 is 588024034505.

It is not a de Polignac number, because 505430420885 - 2⁸ = 505430420629 is a prime.

It is a congruent number.

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, 7759001 + ... + 7823870.

It is an arithmetic number, because the mean of its divisors is an integer number (40905039000).

Almost surely, 2^505430420885 is an apocalyptic number.

It is an amenable number.

505430420885 is a deficient number, since it is larger than the sum of its proper divisors (149050203115).

505430420885 is a wasteful number, since it uses less digits than its factorization.

505430420885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15583388.

The product of its (nonzero) digits is 768000, while the sum is 44.

The spelling of 505430420885 in words is "five hundred five billion, four hundred thirty million, four hundred twenty thousand, eight hundred eighty-five".