549927638020 has 24 divisors (see below), whose sum is σ = 1183015066968. Its totient is φ = 214605907200.

The previous prime is 549927638011. The next prime is 549927638023. The reversal of 549927638020 is 20836729945.

It can be written as a sum of positive squares in 4 ways, for example, as 62299161604 + 487628476416 = 249598^2 + 698304^2 .

It is a super-2 number, since 2×549927638020² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (549927638023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335320911 + ... + 335322550.

It is an arithmetic number, because the mean of its divisors is an integer number (49292294457).

Almost surely, 2^549927638020 is an apocalyptic number.

It is an amenable number.

549927638020 is an abundant number, since it is smaller than the sum of its proper divisors (633087428948).

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

549927638020 is a wasteful number, since it uses less digits than its factorization.

549927638020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670643511 (or 670643509 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 55.

The spelling of 549927638020 in words is "five hundred forty-nine billion, nine hundred twenty-seven million, six hundred thirty-eight thousand, twenty".