2153353666 has 8 divisors (see below), whose sum is σ = 3230283024. Its totient is φ = 1076592660.

The previous prime is 2153353649. The next prime is 2153353681. The reversal of 2153353666 is 6663533512.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2760 + ... + 65683.

It is an arithmetic number, because the mean of its divisors is an integer number (403785378).

Almost surely, 2^2153353666 is an apocalyptic number.

2153353666 is a deficient number, since it is larger than the sum of its proper divisors (1076929358).

2153353666 is a wasteful number, since it uses less digits than its factorization.

2153353666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84176.

The product of its digits is 291600, while the sum is 40.

The square root of 2153353666 is about 46404.2418966198. The cubic root of 2153353666 is about 1291.3336099140. Note that the first 3 decimals are identical.

The spelling of 2153353666 in words is "two billion, one hundred fifty-three million, three hundred fifty-three thousand, six hundred sixty-six".