2678617212266 has 8 divisors (see below), whose sum is σ = 4019360288004. Its totient is φ = 1338830449600.

The previous prime is 2678617212241. The next prime is 2678617212277. The reversal of 2678617212266 is 6622127168762.

It can be written as a sum of positive squares in 2 ways, for example, as 2555454819241 + 123162393025 = 1598579^2 + 350945^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 239071265 + ... + 239082468.

Almost surely, 2^{2678617212266} is an apocalyptic number.

2678617212266 is a deficient number, since it is larger than the sum of its proper divisors (1340743075738).

2678617212266 is a wasteful number, since it uses less digits than its factorization.

2678617212266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478156536.

The product of its digits is 8128512, while the sum is 56.

The spelling of 2678617212266 in words is "two trillion, six hundred seventy-eight billion, six hundred seventeen million, two hundred twelve thousand, two hundred sixty-six".