2666122644 has 48 divisors (see below), whose sum is σ = 6317942400. Its totient is φ = 874897920.

The previous prime is 2666122639. The next prime is 2666122673. The reversal of 2666122644 is 4462216662.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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, 522184 + ... + 527264.

It is an arithmetic number, because the mean of its divisors is an integer number (131623800).

Almost surely, 2^2666122644 is an apocalyptic number.

It is an amenable number.

2666122644 is an abundant number, since it is smaller than the sum of its proper divisors (3651819756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2666122644 is a wasteful number, since it uses less digits than its factorization.

2666122644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5760 (or 5758 counting only the distinct ones).

The product of its digits is 165888, while the sum is 39.

The square root of 2666122644 is about 51634.5102039324. The cubic root of 2666122644 is about 1386.6282412254.

The spelling of 2666122644 in words is "two billion, six hundred sixty-six million, one hundred twenty-two thousand, six hundred forty-four".