648874371578 has 16 divisors (see below), whose sum is σ = 977917536000. Its totient is φ = 322905435552.

The previous prime is 648874371557. The next prime is 648874371581. The reversal of 648874371578 is 875173478846.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 530483 + ... + 1256646.

It is an arithmetic number, because the mean of its divisors is an integer number (61119846000).

Almost surely, 2^648874371578 is an apocalyptic number.

648874371578 is a deficient number, since it is larger than the sum of its proper divisors (329043164422).

648874371578 is a wasteful number, since it uses less digits than its factorization.

648874371578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1787989.

The product of its digits is 252887040, while the sum is 68.

The spelling of 648874371578 in words is "six hundred forty-eight billion, eight hundred seventy-four million, three hundred seventy-one thousand, five hundred seventy-eight".