6441280340 has 48 divisors (see below), whose sum is σ = 14819837760. Its totient is φ = 2332212480.

The previous prime is 6441280333. The next prime is 6441280343. The reversal of 6441280340 is 430821446.

It is a junction number, because it is equal to n+sod(n) for n = 6441280297 and 6441280306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6441280343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11570 + ... + 114089.

It is an arithmetic number, because the mean of its divisors is an integer number (308746620).

Almost surely, 2^6441280340 is an apocalyptic number.

It is an amenable number.

6441280340 is an abundant number, since it is smaller than the sum of its proper divisors (8378557420).

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

6441280340 is a wasteful number, since it uses less digits than its factorization.

6441280340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125912 (or 125910 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 6441280340 is about 80257.5874294761. The cubic root of 6441280340 is about 1860.6187809032.

The spelling of 6441280340 in words is "six billion, four hundred forty-one million, two hundred eighty thousand, three hundred forty".