5518890989824 has 243 divisors, whose sum is σ = 11740728942579. Its totient is φ = 2589041602560.

The previous prime is 5518890989819. The next prime is 5518890989831. The reversal of 5518890989824 is 4289890988155.

The square root of 5518890989824 is 2349232.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1655936596224 + 3862954393600 = 1286832^2 + 1965440^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 66492662487 + ... + 66492662569.

Almost surely, 2^{5518890989824} is an apocalyptic number.

5518890989824 is the 2349232-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5518890989824

5518890989824 is an abundant number, since it is smaller than the sum of its proper divisors (6221837952755).

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

5518890989824 is an frugal number, since it uses more digits than its factorization.

5518890989824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 597196800, while the sum is 76.

The spelling of 5518890989824 in words is "five trillion, five hundred eighteen billion, eight hundred ninety million, nine hundred eighty-nine thousand, eight hundred twenty-four".