648354189537 has 16 divisors (see below), whose sum is σ = 960904330560. Its totient is φ = 432065304000.

The previous prime is 648354189533. The next prime is 648354189557. The reversal of 648354189537 is 735981453846.

648354189537 is a `hidden beast` number, since 6 + 4 + 8 + 3 + 541 + 89 + 5 + 3 + 7 = 666.

It is not a de Polignac number, because 648354189537 - 2² = 648354189533 is a prime.

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 in 15 ways as a sum of consecutive naturals, for example, 4675464 + ... + 4812137.

It is an arithmetic number, because the mean of its divisors is an integer number (60056520660).

Almost surely, 2^648354189537 is an apocalyptic number.

It is an amenable number.

648354189537 is a deficient number, since it is larger than the sum of its proper divisors (312550141023).

648354189537 is a wasteful number, since it uses less digits than its factorization.

648354189537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9490141 (or 9490135 counting only the distinct ones).

The product of its digits is 87091200, while the sum is 63.

The spelling of 648354189537 in words is "six hundred forty-eight billion, three hundred fifty-four million, one hundred eighty-nine thousand, five hundred thirty-seven".