2666666666666 has 32 divisors (see below), whose sum is σ = 4297544595072. Its totient is φ = 1236478763520.

The previous prime is 2666666666639. The next prime is 2666666666693. The reversal of 2666666666666 is 6666666666662.

It is an interprime number because it is at equal distance from previous prime (2666666666639) and next prime (2666666666693).

It is a super-2 number, since 2×2666666666666² (a number of 26 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (74) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

2666666666666 is a modest number, since divided by 6666666 gives 266666 as remainder.

It is a plaindrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 2666666666593 and 2666666666602.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3666665 + ... + 4333331.

It is an arithmetic number, because the mean of its divisors is an integer number (134298268596).

Almost surely, 2^{2666666666666} is an apocalyptic number.

2666666666666 is a deficient number, since it is larger than the sum of its proper divisors (1630877928406).

2666666666666 is a wasteful number, since it uses less digits than its factorization.

2666666666666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668414.

The product of its digits is 4353564672, while the sum is 74.

The spelling of 2666666666666 in words is "two trillion, six hundred sixty-six billion, six hundred sixty-six million, six hundred sixty-six thousand, six hundred sixty-six".