6445641107248 has 40 divisors (see below), whose sum is σ = 14273060349600. Its totient is φ = 2762307425280.

The previous prime is 6445641107231. The next prime is 6445641107249. The reversal of 6445641107248 is 8427011465446.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6445641107195 and 6445641107204.

It is not an unprimeable number, because it can be changed into a prime (6445641107249) 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, 1703928 + ... + 3974248.

It is an arithmetic number, because the mean of its divisors is an integer number (356826508740).

Almost surely, 2^{6445641107248} is an apocalyptic number.

It is an amenable number.

6445641107248 is an abundant number, since it is smaller than the sum of its proper divisors (7827419242352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6445641107248 is a wasteful number, since it uses less digits than its factorization.

6445641107248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2295685 (or 2295679 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 52.

The spelling of 6445641107248 in words is "six trillion, four hundred forty-five billion, six hundred forty-one million, one hundred seven thousand, two hundred forty-eight".