505050009858 has 24 divisors (see below), whose sum is σ = 1094362230000. Its totient is φ = 168336586584.

The previous prime is 505050009823. The next prime is 505050009859. The reversal of 505050009858 is 858900050505.

505050009858 is a `hidden beast` number, since 5 + 0 + 5 + 0 + 500 + 0 + 98 + 58 = 666.

It is not an unprimeable number, because it can be changed into a prime (505050009859) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 884608 + ... + 1338891.

It is an arithmetic number, because the mean of its divisors is an integer number (45598426250).

Almost surely, 2^505050009858 is an apocalyptic number.

505050009858 is an abundant number, since it is smaller than the sum of its proper divisors (589312220142).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505050009858 is a wasteful number, since it uses less digits than its factorization.

505050009858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2236126 (or 2236123 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 45.

The spelling of 505050009858 in words is "five hundred five billion, fifty million, nine thousand, eight hundred fifty-eight".