5518371668688 has 60 divisors (see below), whose sum is σ = 15469819974180. Its totient is φ = 1836355243008.

The previous prime is 5518371668687. The next prime is 5518371668713. The reversal of 5518371668688 is 8868661738155.

5518371668688 is a `hidden beast` number, since 5 + 518 + 37 + 16 + 6 + 8 + 68 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1974384696384 + 3543986972304 = 1405128^2 + 1882548^2 .

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5518371668687) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32226603 + ... + 32397386.

It is an arithmetic number, because the mean of its divisors is an integer number (257830332903).

Almost surely, 2^{5518371668688} is an apocalyptic number.

It is an amenable number.

5518371668688 is an abundant number, since it is smaller than the sum of its proper divisors (9951448305492).

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

5518371668688 is a wasteful number, since it uses less digits than its factorization.

5518371668688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64624596 (or 64624587 counting only the distinct ones).

The product of its digits is 464486400, while the sum is 72.

The spelling of 5518371668688 in words is "five trillion, five hundred eighteen billion, three hundred seventy-one million, six hundred sixty-eight thousand, six hundred eighty-eight".