648404063052084 has 72 divisors (see below), whose sum is σ = 1735529199211080. Its totient is φ = 203409771005952.

The previous prime is 648404063052077. The next prime is 648404063052103. The reversal of 648404063052084 is 480250360404846.

It is a happy number.

648404063052084 is a `hidden beast` number, since 6 + 4 + 8 + 4 + 0 + 4 + 0 + 6 + 30 + 520 + 84 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 146636357422500 + 501767705629584 = 12109350^2 + 22400172^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 648404063052084.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17719539 + ... + 40134650.

It is an arithmetic number, because the mean of its divisors is an integer number (24104572211265).

Almost surely, 2^{648404063052084} is an apocalyptic number.

It is an amenable number.

648404063052084 is an abundant number, since it is smaller than the sum of its proper divisors (1087125136158996).

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

648404063052084 is a wasteful number, since it uses less digits than its factorization.

648404063052084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57872529 (or 57872524 counting only the distinct ones).

The product of its (nonzero) digits is 17694720, while the sum is 54.

The spelling of 648404063052084 in words is "six hundred forty-eight trillion, four hundred four billion, sixty-three million, fifty-two thousand, eighty-four".