549288163872 has 864 divisors, whose sum is σ = 1931903129520. Its totient is φ = 147397017600.

The previous prime is 549288163867. The next prime is 549288163903. The reversal of 549288163872 is 278361882945.

549288163872 is a `hidden beast` number, since 5 + 492 + 8 + 8 + 1 + 63 + 87 + 2 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 440253482256 + 109034681616 = 663516^2 + 330204^2 .

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 4009402588 + ... + 4009402724.

Almost surely, 2^549288163872 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 549288163872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (965951564760).

549288163872 is an abundant number, since it is smaller than the sum of its proper divisors (1382614965648).

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

549288163872 is a wasteful number, since it uses less digits than its factorization.

549288163872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394 (or 376 counting only the distinct ones).

The product of its digits is 46448640, while the sum is 63.

The spelling of 549288163872 in words is "five hundred forty-nine billion, two hundred eighty-eight million, one hundred sixty-three thousand, eight hundred seventy-two".