544455441540 has 144 divisors (see below), whose sum is σ = 1707792061248. Its totient is φ = 140322454272.

The previous prime is 544455441527. The next prime is 544455441547. The reversal of 544455441540 is 45144554445.

544455441540 is a `hidden beast` number, since 5 + 4 + 4 + 4 + 554 + 41 + 54 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (544455441547) 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, 213279 + ... + 1065081.

It is an arithmetic number, because the mean of its divisors is an integer number (11859667092).

Almost surely, 2^544455441540 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 544455441540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (853896030624).

544455441540 is an abundant number, since it is smaller than the sum of its proper divisors (1163336619708).

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

544455441540 is a wasteful number, since it uses less digits than its factorization.

544455441540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851938 (or 851933 counting only the distinct ones).

The product of its (nonzero) digits is 2560000, while the sum is 45.

Adding to 544455441540 its reverse (45144554445), we get a palindrome (589599995985).

The spelling of 544455441540 in words is "five hundred forty-four billion, four hundred fifty-five million, four hundred forty-one thousand, five hundred forty".