6144267440 has 20 divisors (see below), whose sum is σ = 14285421984. Its totient is φ = 2457706944.

The previous prime is 6144267433. The next prime is 6144267473. The reversal of 6144267440 is 447624416.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 6144267394 and 6144267403.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38401592 + ... + 38401751.

Almost surely, 2^6144267440 is an apocalyptic number.

It is an amenable number.

6144267440 is an abundant number, since it is smaller than the sum of its proper divisors (8141154544).

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

6144267440 is a wasteful number, since it uses less digits than its factorization.

6144267440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76803356 (or 76803350 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 38.

The square root of 6144267440 is about 78385.3777180413. The cubic root of 6144267440 is about 1831.5693625589.

The spelling of 6144267440 in words is "six billion, one hundred forty-four million, two hundred sixty-seven thousand, four hundred forty".