6448351656 has 16 divisors (see below), whose sum is σ = 16120879200. Its totient is φ = 2149450544.

The previous prime is 6448351649. The next prime is 6448351661. The reversal of 6448351656 is 6561538446.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134340636 + ... + 134340683.

It is an arithmetic number, because the mean of its divisors is an integer number (1007554950).

Almost surely, 2^6448351656 is an apocalyptic number.

It is an amenable number.

6448351656 is an abundant number, since it is smaller than the sum of its proper divisors (9672527544).

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

6448351656 is a wasteful number, since it uses less digits than its factorization.

6448351656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268681328 (or 268681324 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 48.

The square root of 6448351656 is about 80301.6292238209. The cubic root of 6448351656 is about 1861.2994018848.

The spelling of 6448351656 in words is "six billion, four hundred forty-eight million, three hundred fifty-one thousand, six hundred fifty-six".