6478985211 has 4 divisors (see below), whose sum is σ = 8638646952. Its totient is φ = 4319323472.

The previous prime is 6478985171. The next prime is 6478985251. The reversal of 6478985211 is 1125898746.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (6478985171) and next prime (6478985251).

It is a cyclic number.

It is not a de Polignac number, because 6478985211 - 2⁶ = 6478985147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6478985251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1079830866 + ... + 1079830871.

It is an arithmetic number, because the mean of its divisors is an integer number (2159661738).

Almost surely, 2^6478985211 is an apocalyptic number.

6478985211 is a deficient number, since it is larger than the sum of its proper divisors (2159661741).

6478985211 is a wasteful number, since it uses less digits than its factorization.

6478985211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2159661740.

The product of its digits is 967680, while the sum is 51.

The square root of 6478985211 is about 80492.1437843471. The cubic root of 6478985211 is about 1864.2421779556.

The spelling of 6478985211 in words is "six billion, four hundred seventy-eight million, nine hundred eighty-five thousand, two hundred eleven".