549365229540 has 72 divisors (see below), whose sum is σ = 1707051980088. Its totient is φ = 142924285440.

The previous prime is 549365229481. The next prime is 549365229547. The reversal of 549365229540 is 45922563945.

549365229540 is a `hidden beast` number, since 5 + 4 + 9 + 365 + 229 + 54 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3649126464 + 545716103076 = 60408^2 + 738726^2 .

It is a super-2 number, since 2×549365229540² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (549365229547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37212487 + ... + 37227246.

It is an arithmetic number, because the mean of its divisors is an integer number (23709055279).

Almost surely, 2^549365229540 is an apocalyptic number.

It is an amenable number.

549365229540 is an abundant number, since it is smaller than the sum of its proper divisors (1157686750548).

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

549365229540 is a wasteful number, since it uses less digits than its factorization.

549365229540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74439789 (or 74439784 counting only the distinct ones).

The product of its (nonzero) digits is 11664000, while the sum is 54.

The spelling of 549365229540 in words is "five hundred forty-nine billion, three hundred sixty-five million, two hundred twenty-nine thousand, five hundred forty".