544366636640 has 96 divisors (see below), whose sum is σ = 1326277864800. Its totient is φ = 211009638400.

The previous prime is 544366636633. The next prime is 544366636661. The reversal of 544366636640 is 46636663445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 698975 + ... + 1255905.

It is an arithmetic number, because the mean of its divisors is an integer number (13815394425).

Almost surely, 2^544366636640 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 544366636640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (663138932400).

544366636640 is an abundant number, since it is smaller than the sum of its proper divisors (781911228160).

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

544366636640 is a wasteful number, since it uses less digits than its factorization.

544366636640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557136 (or 557128 counting only the distinct ones).

The product of its (nonzero) digits is 22394880, while the sum is 53.

The spelling of 544366636640 in words is "five hundred forty-four billion, three hundred sixty-six million, six hundred thirty-six thousand, six hundred forty".