544551643460 has 96 divisors (see below), whose sum is σ = 1279143290880. Its totient is φ = 193032560000.

The previous prime is 544551643459. The next prime is 544551643463. The reversal of 544551643460 is 64346155445.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is not an unprimeable number, because it can be changed into a prime (544551643463) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2490431 + ... + 2700249.

It is an arithmetic number, because the mean of its divisors is an integer number (13324409280).

Almost surely, 2^544551643460 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 544551643460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (639571645440).

544551643460 is an abundant number, since it is smaller than the sum of its proper divisors (734591647420).

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

544551643460 is a wasteful number, since it uses less digits than its factorization.

544551643460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210137 (or 210135 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 47.

The spelling of 544551643460 in words is "five hundred forty-four billion, five hundred fifty-one million, six hundred forty-three thousand, four hundred sixty".