6478561696 has 12 divisors (see below), whose sum is σ = 12754668402. Its totient is φ = 3239280832.

The previous prime is 6478561681. The next prime is 6478561709. The reversal of 6478561696 is 6961658746.

It can be written as a sum of positive squares in only one way, i.e., 3338528400 + 3140033296 = 57780^2 + 56036^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6478561696.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101227495 + ... + 101227558.

Almost surely, 2^6478561696 is an apocalyptic number.

It is an amenable number.

6478561696 is a deficient number, since it is larger than the sum of its proper divisors (6276106706).

6478561696 is a wasteful number, since it uses less digits than its factorization.

6478561696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202455063 (or 202455055 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 58.

The square root of 6478561696 is about 80489.5129566579. The cubic root of 6478561696 is about 1864.2015567933.

The spelling of 6478561696 in words is "six billion, four hundred seventy-eight million, five hundred sixty-one thousand, six hundred ninety-six".