6645051363 has 8 divisors (see below), whose sum is σ = 8865608976. Its totient is φ = 4427264000.

The previous prime is 6645051359. The next prime is 6645051377. The reversal of 6645051363 is 3631505466.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 6645051363 - 2² = 6645051359 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6645051313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 686958 + ... + 696563.

It is an arithmetic number, because the mean of its divisors is an integer number (1108201122).

Almost surely, 2^6645051363 is an apocalyptic number.

6645051363 is a deficient number, since it is larger than the sum of its proper divisors (2220557613).

6645051363 is a wasteful number, since it uses less digits than its factorization.

6645051363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385125.

The product of its (nonzero) digits is 194400, while the sum is 39.

The square root of 6645051363 is about 81517.1844643815. The cubic root of 6645051363 is about 1880.0357774804.

The spelling of 6645051363 in words is "six billion, six hundred forty-five million, fifty-one thousand, three hundred sixty-three".