544564168668 has 120 divisors (see below), whose sum is σ = 1535206120448. Its totient is φ = 167328664704.

The previous prime is 544564168657. The next prime is 544564168693. The reversal of 544564168668 is 866861465445.

544564168668 is a `hidden beast` number, since 5 + 4 + 4 + 564 + 1 + 6 + 8 + 6 + 68 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2999205 + ... + 3175587.

Almost surely, 2^544564168668 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 544564168668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (767603060224).

544564168668 is an abundant number, since it is smaller than the sum of its proper divisors (990641951780).

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

544564168668 is a wasteful number, since it uses less digits than its factorization.

544564168668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177145 (or 177134 counting only the distinct ones).

The product of its digits is 132710400, while the sum is 63.

The spelling of 544564168668 in words is "five hundred forty-four billion, five hundred sixty-four million, one hundred sixty-eight thousand, six hundred sixty-eight".