550478589840 has 960 divisors, whose sum is σ = 2141763275520. Its totient is φ = 129478901760.

The previous prime is 550478589839. The next prime is 550478589841. The reversal of 550478589840 is 48985874055.

550478589840 is a `hidden beast` number, since 5 + 5 + 0 + 4 + 7 + 8 + 589 + 8 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (550478589839) and next prime (550478589841).

It is not an unprimeable number, because it can be changed into a prime (550478589841) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1736525362 + ... + 1736525678.

It is an arithmetic number, because the mean of its divisors is an integer number (2231003412).

Almost surely, 2^550478589840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550478589840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1070881637760).

550478589840 is an abundant number, since it is smaller than the sum of its proper divisors (1591284685680).

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

550478589840 is a wasteful number, since it uses less digits than its factorization.

550478589840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525 (or 494 counting only the distinct ones).

The product of its (nonzero) digits is 64512000, while the sum is 63.

The spelling of 550478589840 in words is "five hundred fifty billion, four hundred seventy-eight million, five hundred eighty-nine thousand, eight hundred forty".