618045364544 has 28 divisors (see below), whose sum is σ = 1256346794388. Its totient is φ = 301485542400.

The previous prime is 618045364523. The next prime is 618045364549. The reversal of 618045364544 is 445463540816.

It can be written as a sum of positive squares in 2 ways, for example, as 116090118400 + 501955246144 = 340720^2 + 708488^2 .

It is a junction number, because it is equal to n+sod(n) for n = 618045364492 and 618045364501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618045364549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117765167 + ... + 117770414.

It is an arithmetic number, because the mean of its divisors is an integer number (44869528371).

Almost surely, 2^618045364544 is an apocalyptic number.

618045364544 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

618045364544 is an abundant number, since it is smaller than the sum of its proper divisors (638301429844).

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

618045364544 is a wasteful number, since it uses less digits than its factorization.

618045364544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235535634 (or 235535624 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 50.

The spelling of 618045364544 in words is "six hundred eighteen billion, forty-five million, three hundred sixty-four thousand, five hundred forty-four".