648613641384 has 48 divisors (see below), whose sum is σ = 1766475734400. Its totient is φ = 214996696224.

The previous prime is 648613641373. The next prime is 648613641397. The reversal of 648613641384 is 483146316846.

648613641384 is a `hidden beast` number, since 6 + 4 + 8 + 613 + 6 + 4 + 13 + 8 + 4 = 666.

It is a super-3 number, since 3×648613641384³ (a number of 36 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

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

It is a self number, because there is not a number n which added to its sum of digits gives 648613641384.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25150584 + ... + 25176359.

It is an arithmetic number, because the mean of its divisors is an integer number (36801577800).

Almost surely, 2^648613641384 is an apocalyptic number.

It is an amenable number.

648613641384 is an abundant number, since it is smaller than the sum of its proper divisors (1117862093016).

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

648613641384 is a wasteful number, since it uses less digits than its factorization.

648613641384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50327134 (or 50327127 counting only the distinct ones).

The product of its digits is 7962624, while the sum is 54.

The spelling of 648613641384 in words is "six hundred forty-eight billion, six hundred thirteen million, six hundred forty-one thousand, three hundred eighty-four".