5518540242720 has 192 divisors, whose sum is σ = 19330780170240. Its totient is φ = 1470400118784.

The previous prime is 5518540242707. The next prime is 5518540242731. The reversal of 5518540242720 is 272420458155.

5518540242720 is a `hidden beast` number, since 5 + 5 + 18 + 540 + 24 + 2 + 72 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4732609 + ... + 5782271.

It is an arithmetic number, because the mean of its divisors is an integer number (100681146720).

Almost surely, 2^{5518540242720} 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 5518540242720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9665390085120).

5518540242720 is an abundant number, since it is smaller than the sum of its proper divisors (13812239927520).

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

5518540242720 is a wasteful number, since it uses less digits than its factorization.

5518540242720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050904 (or 1050890 counting only the distinct ones).

The product of its (nonzero) digits is 896000, while the sum is 45.

The spelling of 5518540242720 in words is "five trillion, five hundred eighteen billion, five hundred forty million, two hundred forty-two thousand, seven hundred twenty".