648393393846 has 32 divisors (see below), whose sum is σ = 1415175556608. Its totient is φ = 196413532640.

The previous prime is 648393393827. The next prime is 648393393911.

648393393846 is nontrivially palindromic in base 10.

648393393846 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1544190 + ... + 1918673.

It is an arithmetic number, because the mean of its divisors is an integer number (44224236144).

Almost surely, 2^648393393846 is an apocalyptic number.

648393393846 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

648393393846 is an abundant number, since it is smaller than the sum of its proper divisors (766782162762).

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

648393393846 is a wasteful number, since it uses less digits than its factorization.

648393393846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3465716.

The product of its digits is 241864704, while the sum is 66.

The spelling of 648393393846 in words is "six hundred forty-eight billion, three hundred ninety-three million, three hundred ninety-three thousand, eight hundred forty-six".