2666444881148 has 12 divisors (see below), whose sum is σ = 4827184698840. Its totient is φ = 1287249252912.

The previous prime is 2666444881141. The next prime is 2666444881159. The reversal of 2666444881148 is 8411884446662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666444881141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11493296786 + ... + 11493297017.

It is an arithmetic number, because the mean of its divisors is an integer number (402265391570).

Almost surely, 2^{2666444881148} is an apocalyptic number.

It is an amenable number.

2666444881148 is a deficient number, since it is larger than the sum of its proper divisors (2160739817692).

2666444881148 is a wasteful number, since it uses less digits than its factorization.

2666444881148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22986593836 (or 22986593834 counting only the distinct ones).

The product of its digits is 56623104, while the sum is 62.

The spelling of 2666444881148 in words is "two trillion, six hundred sixty-six billion, four hundred forty-four million, eight hundred eighty-one thousand, one hundred forty-eight".