6433968278 has 16 divisors (see below), whose sum is σ = 9700791984. Its totient is φ = 3200413440.

The previous prime is 6433968269. The next prime is 6433968329. The reversal of 6433968278 is 8728693346.

It is a happy number.

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, 304538 + ... + 324978.

It is an arithmetic number, because the mean of its divisors is an integer number (606299499).

Almost surely, 2^6433968278 is an apocalyptic number.

6433968278 is a deficient number, since it is larger than the sum of its proper divisors (3266823706).

6433968278 is a wasteful number, since it uses less digits than its factorization.

6433968278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21247.

The product of its digits is 10450944, while the sum is 56.

The square root of 6433968278 is about 80212.0207824239. The cubic root of 6433968278 is about 1859.9144638277.

The spelling of 6433968278 in words is "six billion, four hundred thirty-three million, nine hundred sixty-eight thousand, two hundred seventy-eight".