2666544392 has 12 divisors (see below), whose sum is σ = 5000044605. Its totient is φ = 1333199168.

The previous prime is 2666544383. The next prime is 2666544407. The reversal of 2666544392 is 2934456662.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 2559752836 + 106791556 = 50594^2 + 10334^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=36514.

It is a super-2 number, since 2×2666544392² = 14220917989013299328, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 136928 + ... + 155184.

Almost surely, 2^2666544392 is an apocalyptic number.

It is an amenable number.

2666544392 is a deficient number, since it is larger than the sum of its proper divisors (2333500213).

2666544392 is an frugal number, since it uses more digits than its factorization.

2666544392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36520 (or 18259 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 47.

The square root of 2666544392 is about 51638.5940164912. The cubic root of 2666544392 is about 1386.7013532476.

The spelling of 2666544392 in words is "two billion, six hundred sixty-six million, five hundred forty-four thousand, three hundred ninety-two".