518266045440 has 1232 divisors, whose sum is σ = 2192122408896. Its totient is φ = 115856179200.

The previous prime is 518266045393. The next prime is 518266045441. The reversal of 518266045440 is 44540662815.

It is a happy number.

518266045440 is a `hidden beast` number, since 5 + 18 + 26 + 604 + 5 + 4 + 4 + 0 = 666.

It is a super-2 number, since 2×518266045440² (a number of 24 digits) contains 22 as substring.

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 (518266045441) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 533744155 + ... + 533745125.

Almost surely, 2^518266045440 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 518266045440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1096061204448).

518266045440 is an abundant number, since it is smaller than the sum of its proper divisors (1673856363456).

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

518266045440 is a wasteful number, since it uses less digits than its factorization.

518266045440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038 (or 1005 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 45.

The spelling of 518266045440 in words is "five hundred eighteen billion, two hundred sixty-six million, forty-five thousand, four hundred forty".