648522098388 has 18 divisors (see below), whose sum is σ = 1639319748794. Its totient is φ = 216174032784.

The previous prime is 648522098377. The next prime is 648522098423. The reversal of 648522098388 is 883890225846.

648522098388 is a `hidden beast` number, since 6 + 48 + 5 + 2 + 209 + 8 + 388 = 666.

It can be written as a sum of positive squares in only one way, i.e., 521749071684 + 126773026704 = 722322^2 + 356052^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9007251331 + ... + 9007251402.

Almost surely, 2^648522098388 is an apocalyptic number.

It is an amenable number.

648522098388 is an abundant number, since it is smaller than the sum of its proper divisors (990797650406).

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

648522098388 is a wasteful number, since it uses less digits than its factorization.

648522098388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18014502743 (or 18014502738 counting only the distinct ones).

The product of its (nonzero) digits is 53084160, while the sum is 63.

The spelling of 648522098388 in words is "six hundred forty-eight billion, five hundred twenty-two million, ninety-eight thousand, three hundred eighty-eight".