505000549998 has 128 divisors (see below), whose sum is σ = 1293767193600. Its totient is φ = 143026176384.

The previous prime is 505000549961. The next prime is 505000550011. The reversal of 505000549998 is 899945000505.

505000549998 is a `hidden beast` number, since 5 + 0 + 5 + 0 + 0 + 0 + 549 + 9 + 98 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 35563836 + ... + 35578032.

It is an arithmetic number, because the mean of its divisors is an integer number (10107556200).

Almost surely, 2^505000549998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 505000549998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (646883596800).

505000549998 is an abundant number, since it is smaller than the sum of its proper divisors (788766643602).

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

505000549998 is a wasteful number, since it uses less digits than its factorization.

505000549998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15031 (or 15025 counting only the distinct ones).

The product of its (nonzero) digits is 2916000, while the sum is 54.

The spelling of 505000549998 in words is "five hundred five billion, five hundred forty-nine thousand, nine hundred ninety-eight".