648354189536 has 12 divisors (see below), whose sum is σ = 1276447310712. Its totient is φ = 324177094752.

The previous prime is 648354189533. The next prime is 648354189557. The reversal of 648354189536 is 635981453846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648354189533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10130534180 + ... + 10130534243.

It is an arithmetic number, because the mean of its divisors is an integer number (106370609226).

Almost surely, 2^648354189536 is an apocalyptic number.

It is an amenable number.

648354189536 is a deficient number, since it is larger than the sum of its proper divisors (628093121176).

648354189536 is a wasteful number, since it uses less digits than its factorization.

648354189536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20261068433 (or 20261068425 counting only the distinct ones).

The product of its digits is 74649600, while the sum is 62.

The spelling of 648354189536 in words is "six hundred forty-eight billion, three hundred fifty-four million, one hundred eighty-nine thousand, five hundred thirty-six".