6653221245 has 48 divisors (see below), whose sum is σ = 12587612544. Its totient is φ = 3224016000.

The previous prime is 6653221217. The next prime is 6653221291. The reversal of 6653221245 is 5421223566.

6653221245 is a `hidden beast` number, since 66 + 532 + 21 + 2 + 45 = 666.

It is not a de Polignac number, because 6653221245 - 2⁵ = 6653221213 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1513000 + ... + 1517390.

It is an arithmetic number, because the mean of its divisors is an integer number (262241928).

Almost surely, 2^6653221245 is an apocalyptic number.

It is an amenable number.

6653221245 is a deficient number, since it is larger than the sum of its proper divisors (5934391299).

6653221245 is a wasteful number, since it uses less digits than its factorization.

6653221245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7474 (or 7471 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 6653221245 is about 81567.2804805947. The cubic root of 6653221245 is about 1880.8059435871.

The spelling of 6653221245 in words is "six billion, six hundred fifty-three million, two hundred twenty-one thousand, two hundred forty-five".