2053328666 has 4 divisors (see below), whose sum is σ = 3079993002. Its totient is φ = 1026664332.

The previous prime is 2053328623. The next prime is 2053328681. The reversal of 2053328666 is 6668233502.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1778730625 + 274598041 = 42175^2 + 16571^2 .

It is a super-2 number, since 2×2053328666² = 8432317221234679112, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 513332165 + ... + 513332168.

Almost surely, 2^2053328666 is an apocalyptic number.

2053328666 is a deficient number, since it is larger than the sum of its proper divisors (1026664336).

2053328666 is a wasteful number, since it uses less digits than its factorization.

2053328666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026664335.

The product of its (nonzero) digits is 311040, while the sum is 41.

The square root of 2053328666 is about 45313.6697476600. The cubic root of 2053328666 is about 1271.0212848530.

The spelling of 2053328666 in words is "two billion, fifty-three million, three hundred twenty-eight thousand, six hundred sixty-six".