549772558338 has 16 divisors (see below), whose sum is σ = 1103823505440. Its totient is φ = 182544454656.

The previous prime is 549772558337. The next prime is 549772558343. The reversal of 549772558338 is 833855277945.

It is a super-2 number, since 2×549772558338² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (549772558331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178264528 + ... + 178267611.

It is an arithmetic number, because the mean of its divisors is an integer number (68988969090).

Almost surely, 2^549772558338 is an apocalyptic number.

549772558338 is an abundant number, since it is smaller than the sum of its proper divisors (554050947102).

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

549772558338 is a wasteful number, since it uses less digits than its factorization.

549772558338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356532401.

The product of its digits is 254016000, while the sum is 66.

The spelling of 549772558338 in words is "five hundred forty-nine billion, seven hundred seventy-two million, five hundred fifty-eight thousand, three hundred thirty-eight".