550054742778 has 48 divisors (see below), whose sum is σ = 1214086872960. Its totient is φ = 179931345408.

The previous prime is 550054742773. The next prime is 550054742779. The reversal of 550054742778 is 877247450055.

550054742778 is a `hidden beast` number, since 5 + 5 + 0 + 0 + 547 + 4 + 27 + 78 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (550054742773) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 163951 + ... + 1061597.

It is an arithmetic number, because the mean of its divisors is an integer number (25293476520).

Almost surely, 2^550054742778 is an apocalyptic number.

550054742778 is an abundant number, since it is smaller than the sum of its proper divisors (664032130182).

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

550054742778 is a wasteful number, since it uses less digits than its factorization.

550054742778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898291 (or 898288 counting only the distinct ones).

The product of its (nonzero) digits is 10976000, while the sum is 54.

The spelling of 550054742778 in words is "five hundred fifty billion, fifty-four million, seven hundred forty-two thousand, seven hundred seventy-eight".