6479421578 has 16 divisors (see below), whose sum is σ = 11111105664. Its totient is φ = 2776013520.

The previous prime is 6479421539. The next prime is 6479421581. The reversal of 6479421578 is 8751249746.

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, 26750 + ... + 116937.

It is an arithmetic number, because the mean of its divisors is an integer number (694444104).

Almost surely, 2^6479421578 is an apocalyptic number.

6479421578 is a deficient number, since it is larger than the sum of its proper divisors (4631684086).

6479421578 is a wasteful number, since it uses less digits than its factorization.

6479421578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146917.

The product of its digits is 3386880, while the sum is 53.

The square root of 6479421578 is about 80494.8543572817. The cubic root of 6479421578 is about 1864.2840299575.

The spelling of 6479421578 in words is "six billion, four hundred seventy-nine million, four hundred twenty-one thousand, five hundred seventy-eight".