2666726216836 has 24 divisors (see below), whose sum is σ = 5115150865440. Its totient is φ = 1206403497600.

The previous prime is 2666726216801. The next prime is 2666726216879. The reversal of 2666726216836 is 6386126276662.

It is a super-2 number, since 2×2666726216836² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143610181 + ... + 143628748.

It is an arithmetic number, because the mean of its divisors is an integer number (213131286060).

Almost surely, 2^{2666726216836} is an apocalyptic number.

It is an amenable number.

2666726216836 is a deficient number, since it is larger than the sum of its proper divisors (2448424648604).

2666726216836 is a wasteful number, since it uses less digits than its factorization.

2666726216836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287239155 (or 287239153 counting only the distinct ones).

The product of its digits is 62705664, while the sum is 61.

The spelling of 2666726216836 in words is "two trillion, six hundred sixty-six billion, seven hundred twenty-six million, two hundred sixteen thousand, eight hundred thirty-six".