505555454000 has 80 divisors (see below), whose sum is σ = 1222711027200. Its totient is φ = 202176204800.

The previous prime is 505555453969. The next prime is 505555454021. The reversal of 505555454000 is 454555505.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×505555454000² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9571664 + ... + 9624336.

It is an arithmetic number, because the mean of its divisors is an integer number (15283887840).

Almost surely, 2^505555454000 is an apocalyptic number.

505555454000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 505555454000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (611355513600).

505555454000 is an abundant number, since it is smaller than the sum of its proper divisors (717155573200).

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

505555454000 is a wasteful number, since it uses less digits than its factorization.

505555454000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57495 (or 57479 counting only the distinct ones).

The product of its (nonzero) digits is 250000, while the sum is 38.

The spelling of 505555454000 in words is "five hundred five billion, five hundred fifty-five million, four hundred fifty-four thousand".