5518722672 has 480 divisors, whose sum is σ = 18432153600. Its totient is φ = 1573862400.

The previous prime is 5518722637. The next prime is 5518722689. The reversal of 5518722672 is 2762278155.

5518722672 is a `hidden beast` number, since 5 + 518 + 72 + 2 + 67 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 134602972 + ... + 134603012.

It is an arithmetic number, because the mean of its divisors is an integer number (38400320).

Almost surely, 2^5518722672 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 5518722672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9216076800).

5518722672 is an abundant number, since it is smaller than the sum of its proper divisors (12913430928).

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

5518722672 is a wasteful number, since it uses less digits than its factorization.

5518722672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 119 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The square root of 5518722672 is about 74288.1058582059. The cubic root of 5518722672 is about 1767.1748553620.

The spelling of 5518722672 in words is "five billion, five hundred eighteen million, seven hundred twenty-two thousand, six hundred seventy-two".