505544640450 has 48 divisors (see below), whose sum is σ = 1262165198400. Its totient is φ = 133907120320.

The previous prime is 505544640421. The next prime is 505544640463. The reversal of 505544640450 is 54046445505.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11287374 + ... + 11332073.

It is an arithmetic number, because the mean of its divisors is an integer number (26295108300).

Almost surely, 2^505544640450 is an apocalyptic number.

505544640450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

505544640450 is an abundant number, since it is smaller than the sum of its proper divisors (756620557950).

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

505544640450 is a wasteful number, since it uses less digits than its factorization.

505544640450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22619611 (or 22619606 counting only the distinct ones).

The product of its (nonzero) digits is 960000, while the sum is 42.

The spelling of 505544640450 in words is "five hundred five billion, five hundred forty-four million, six hundred forty thousand, four hundred fifty".