549401263040 has 224 divisors, whose sum is σ = 1522302629760. Its totient is φ = 184977063936.

The previous prime is 549401263013. The next prime is 549401263049. The reversal of 549401263040 is 40362104945.

It is a tau number, because it is divible by the number of its divisors (224).

It is a junction number, because it is equal to n+sod(n) for n = 549401262985 and 549401263003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549401263049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27580124 + ... + 27600036.

Almost surely, 2^549401263040 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 549401263040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (761151314880).

549401263040 is an abundant number, since it is smaller than the sum of its proper divisors (972901366720).

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

549401263040 is a wasteful number, since it uses less digits than its factorization.

549401263040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20159 (or 20149 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

Adding to 549401263040 its reverse (40362104945), we get a palindrome (589763367985).

The spelling of 549401263040 in words is "five hundred forty-nine billion, four hundred one million, two hundred sixty-three thousand, forty".