549881274220 has 144 divisors (see below), whose sum is σ = 1229276224512. Its totient is φ = 206396916480.

The previous prime is 549881274211. The next prime is 549881274263. The reversal of 549881274220 is 22472188945.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 294525727 + ... + 294527593.

It is an arithmetic number, because the mean of its divisors is an integer number (8536640448).

Almost surely, 2^549881274220 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 549881274220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (614638112256).

549881274220 is an abundant number, since it is smaller than the sum of its proper divisors (679394950292).

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

549881274220 is a wasteful number, since it uses less digits than its factorization.

549881274220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2328 (or 2289 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 52.

The spelling of 549881274220 in words is "five hundred forty-nine billion, eight hundred eighty-one million, two hundred seventy-four thousand, two hundred twenty".