6645984250011 has 24 divisors (see below), whose sum is σ = 9460430246400. Its totient is φ = 4147848279696.

The previous prime is 6645984249997. The next prime is 6645984250013. The reversal of 6645984250011 is 1100524895466.

It is a de Polignac number, because none of the positive numbers 2^k-6645984250011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6645984250013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44476111 + ... + 44625288.

It is an arithmetic number, because the mean of its divisors is an integer number (394184593600).

Almost surely, 2^{6645984250011} is an apocalyptic number.

6645984250011 is a deficient number, since it is larger than the sum of its proper divisors (2814445996389).

6645984250011 is a wasteful number, since it uses less digits than its factorization.

6645984250011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89101495 (or 89101472 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 51.

The spelling of 6645984250011 in words is "six trillion, six hundred forty-five billion, nine hundred eighty-four million, two hundred fifty thousand, eleven".