548109489564 has 144 divisors (see below), whose sum is σ = 1705980011008. Its totient is φ = 144492729984.

The previous prime is 548109489563. The next prime is 548109489589. The reversal of 548109489564 is 465984901845.

548109489564 is a `hidden beast` number, since 5 + 48 + 109 + 489 + 5 + 6 + 4 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (548109489563) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7653129 + ... + 7724415.

Almost surely, 2^548109489564 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 548109489564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (852990005504).

548109489564 is an abundant number, since it is smaller than the sum of its proper divisors (1157870521444).

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

548109489564 is a wasteful number, since it uses less digits than its factorization.

548109489564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73664 (or 73659 counting only the distinct ones).

The product of its (nonzero) digits is 49766400, while the sum is 63.

The spelling of 548109489564 in words is "five hundred forty-eight billion, one hundred nine million, four hundred eighty-nine thousand, five hundred sixty-four".