648388883846 has 16 divisors (see below), whose sum is σ = 1097586199440. Its totient is φ = 284559384480.

The previous prime is 648388883839. The next prime is 648388883869.

648388883846 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 508141121 + ... + 508142396.

It is an arithmetic number, because the mean of its divisors is an integer number (68599137465).

Almost surely, 2^648388883846 is an apocalyptic number.

648388883846 is a deficient number, since it is larger than the sum of its proper divisors (449197315594).

648388883846 is a wasteful number, since it uses less digits than its factorization.

648388883846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016283559.

The product of its digits is 1358954496, while the sum is 74.

The spelling of 648388883846 in words is "six hundred forty-eight billion, three hundred eighty-eight million, eight hundred eighty-three thousand, eight hundred forty-six".