6667278961287 has 64 divisors (see below), whose sum is σ = 10659589963776. Its totient is φ = 3624273269760.

The previous prime is 6667278961279. The next prime is 6667278961313. The reversal of 6667278961287 is 7821698727666.

It is not a de Polignac number, because 6667278961287 - 2³ = 6667278961279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6667278961237) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 66494263 + ... + 66594455.

It is an arithmetic number, because the mean of its divisors is an integer number (166556093184).

Almost surely, 2^{6667278961287} is an apocalyptic number.

6667278961287 is a deficient number, since it is larger than the sum of its proper divisors (3992311002489).

6667278961287 is a wasteful number, since it uses less digits than its factorization.

6667278961287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100980.

The product of its digits is 1024192512, while the sum is 75.

The spelling of 6667278961287 in words is "six trillion, six hundred sixty-seven billion, two hundred seventy-eight million, nine hundred sixty-one thousand, two hundred eighty-seven".