2666845349279 has 12 divisors (see below), whose sum is σ = 2883241640160. Its totient is φ = 2464863467040.

The previous prime is 2666845349269. The next prime is 2666845349353. The reversal of 2666845349279 is 9729435486662.

It is not a de Polignac number, because 2666845349279 - 2⁸ = 2666845349023 is a prime.

It is a super-2 number, since 2×2666845349279² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666845349209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90075239 + ... + 90104840.

It is an arithmetic number, because the mean of its divisors is an integer number (240270136680).

Almost surely, 2^{2666845349279} is an apocalyptic number.

2666845349279 is a deficient number, since it is larger than the sum of its proper divisors (216396290881).

2666845349279 is a wasteful number, since it uses less digits than its factorization.

2666845349279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180180158 (or 180180139 counting only the distinct ones).

The product of its digits is 940584960, while the sum is 71.

The spelling of 2666845349279 in words is "two trillion, six hundred sixty-six billion, eight hundred forty-five million, three hundred forty-nine thousand, two hundred seventy-nine".