648118449288 has 108 divisors (see below), whose sum is σ = 1864982905695. Its totient is φ = 203294845440.

The previous prime is 648118449269. The next prime is 648118449313. The reversal of 648118449288 is 882944811846.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

648118449288 is a `hidden beast` number, since 64 + 8 + 1 + 1 + 8 + 4 + 492 + 88 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 392023749924 + 256094699364 = 626118^2 + 506058^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=569262.

It is a nude number because it is divisible by every one of its digits.

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, 116126658 + ... + 116132238.

Almost surely, 2^648118449288 is an apocalyptic number.

648118449288 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 648118449288

648118449288 is an abundant number, since it is smaller than the sum of its proper divisors (1216864456407).

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

648118449288 is an equidigital number, since it uses as much as digits as its factorization.

648118449288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11208 (or 5603 counting only the distinct ones).

The product of its digits is 28311552, while the sum is 63.

The spelling of 648118449288 in words is "six hundred forty-eight billion, one hundred eighteen million, four hundred forty-nine thousand, two hundred eighty-eight".