6447144526275 has 48 divisors (see below), whose sum is σ = 10692833714048. Its totient is φ = 3427655616000.

The previous prime is 6447144526243. The next prime is 6447144526279. The reversal of 6447144526275 is 5726254417446.

It is a happy number.

It is not a de Polignac number, because 6447144526275 - 2⁵ = 6447144526243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6447144526279) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 330088260 + ... + 330107790.

Almost surely, 2^{6447144526275} is an apocalyptic number.

6447144526275 is a deficient number, since it is larger than the sum of its proper divisors (4245689187773).

6447144526275 is a wasteful number, since it uses less digits than its factorization.

6447144526275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33172 (or 33167 counting only the distinct ones).

The product of its digits is 45158400, while the sum is 57.

The spelling of 6447144526275 in words is "six trillion, four hundred forty-seven billion, one hundred forty-four million, five hundred twenty-six thousand, two hundred seventy-five".