2666671213 has 2 divisors, whose sum is σ = 2666671214. Its totient is φ = 2666671212.

The previous prime is 2666671207. The next prime is 2666671229. The reversal of 2666671213 is 3121766662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2341301769 + 325369444 = 48387^2 + 18038^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2666671213 is a prime.

It is a super-2 number, since 2×2666671213² = 14222270716485782738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2666971213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1333335606 + 1333335607.

It is an arithmetic number, because the mean of its divisors is an integer number (1333335607).

Almost surely, 2^2666671213 is an apocalyptic number.

It is an amenable number.

2666671213 is a deficient number, since it is larger than the sum of its proper divisors (1).

2666671213 is an equidigital number, since it uses as much as digits as its factorization.

2666671213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 40.

The square root of 2666671213 is about 51639.8219690967. The cubic root of 2666671213 is about 1386.7233367637.

It can be divided in two parts, 26666 and 71213, that added together give a palindrome (97879).

The spelling of 2666671213 in words is "two billion, six hundred sixty-six million, six hundred seventy-one thousand, two hundred thirteen".