550403050644 has 24 divisors (see below), whose sum is σ = 1426970872320. Its totient is φ = 183467683512.

The previous prime is 550403050643. The next prime is 550403050667. The reversal of 550403050644 is 446050304055.

550403050644 is a `hidden beast` number, since 5 + 5 + 0 + 4 + 0 + 3 + 0 + 5 + 0 + 644 = 666.

It is a super-3 number, since 3×550403050644³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 550403050599 and 550403050608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550403050643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2548162164 + ... + 2548162379.

It is an arithmetic number, because the mean of its divisors is an integer number (59457119680).

Almost surely, 2^550403050644 is an apocalyptic number.

550403050644 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

550403050644 is an abundant number, since it is smaller than the sum of its proper divisors (876567821676).

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

550403050644 is a wasteful number, since it uses less digits than its factorization.

550403050644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5096324556 (or 5096324548 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

Adding to 550403050644 its reverse (446050304055), we get a palindrome (996453354699).

The spelling of 550403050644 in words is "five hundred fifty billion, four hundred three million, fifty thousand, six hundred forty-four".