6493427855 has 4 divisors (see below), whose sum is σ = 7792113432. Its totient is φ = 5194742280.

The previous prime is 6493427839. The next prime is 6493427861. The reversal of 6493427855 is 5587243946.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5587243946 = 2 ⋅2793621973.

It is not a de Polignac number, because 6493427855 - 2⁴ = 6493427839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6493427797 and 6493427806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 649342781 + ... + 649342790.

It is an arithmetic number, because the mean of its divisors is an integer number (1948028358).

Almost surely, 2^6493427855 is an apocalyptic number.

6493427855 is a deficient number, since it is larger than the sum of its proper divisors (1298685577).

6493427855 is a wasteful number, since it uses less digits than its factorization.

6493427855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298685576.

The product of its digits is 7257600, while the sum is 53.

The square root of 6493427855 is about 80581.8084619599. The cubic root of 6493427855 is about 1865.6263764392.

The spelling of 6493427855 in words is "six billion, four hundred ninety-three million, four hundred twenty-seven thousand, eight hundred fifty-five".