6667278961284 has 36 divisors (see below), whose sum is σ = 17042763645180. Its totient is φ = 2197455237120.

The previous prime is 6667278961279. The next prime is 6667278961313. The reversal of 6667278961284 is 4821698727666.

It can be written as a sum of positive squares in 2 ways, for example, as 3632157495684 + 3035121465600 = 1905822^2 + 1742160^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1040458557 + ... + 1040464964.

It is an arithmetic number, because the mean of its divisors is an integer number (473410101255).

Almost surely, 2^{6667278961284} is an apocalyptic number.

It is an amenable number.

6667278961284 is an abundant number, since it is smaller than the sum of its proper divisors (10375484683896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6667278961284 is a wasteful number, since it uses less digits than its factorization.

6667278961284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080923620 (or 2080923615 counting only the distinct ones).

The product of its digits is 585252864, while the sum is 72.

The spelling of 6667278961284 in words is "six trillion, six hundred sixty-seven billion, two hundred seventy-eight million, nine hundred sixty-one thousand, two hundred eighty-four".