648410778418 has 16 divisors (see below), whose sum is σ = 1047718276416. Its totient is φ = 299184947280.

The previous prime is 648410778401. The next prime is 648410778439. The reversal of 648410778418 is 814877014846.

It is a happy number.

648410778418 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 3301296 + ... + 3492187.

It is an arithmetic number, because the mean of its divisors is an integer number (65482392276).

Almost surely, 2^648410778418 is an apocalyptic number.

648410778418 is a deficient number, since it is larger than the sum of its proper divisors (399307497998).

648410778418 is a wasteful number, since it uses less digits than its factorization.

648410778418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6797169.

The product of its (nonzero) digits is 9633792, while the sum is 58.

The spelling of 648410778418 in words is "six hundred forty-eight billion, four hundred ten million, seven hundred seventy-eight thousand, four hundred eighteen".