2661444356 has 12 divisors (see below), whose sum is σ = 4860028992. Its totient is φ = 1272864648.

The previous prime is 2661444349. The next prime is 2661444377. The reversal of 2661444356 is 6534441662.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14464280 + ... + 14464463.

It is an arithmetic number, because the mean of its divisors is an integer number (405002416).

Almost surely, 2^2661444356 is an apocalyptic number.

It is an amenable number.

2661444356 is a deficient number, since it is larger than the sum of its proper divisors (2198584636).

2661444356 is a wasteful number, since it uses less digits than its factorization.

2661444356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28928770 (or 28928768 counting only the distinct ones).

The product of its digits is 414720, while the sum is 41.

The square root of 2661444356 is about 51589.1883634546. The cubic root of 2661444356 is about 1385.8167201342.

The spelling of 2661444356 in words is "two billion, six hundred sixty-one million, four hundred forty-four thousand, three hundred fifty-six".