6144889505 has 4 divisors (see below), whose sum is σ = 7373867412. Its totient is φ = 4915911600.

The previous prime is 6144889433. The next prime is 6144889511. The reversal of 6144889505 is 5059884416.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2620211344 + 3524678161 = 51188^2 + 59369^2 .

It is not a de Polignac number, because 6144889505 - 2²⁰ = 6143840929 is a prime.

It is a Duffinian number.

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, 614488946 + ... + 614488955.

It is an arithmetic number, because the mean of its divisors is an integer number (1843466853).

Almost surely, 2^6144889505 is an apocalyptic number.

It is an amenable number.

6144889505 is a deficient number, since it is larger than the sum of its proper divisors (1228977907).

6144889505 is a wasteful number, since it uses less digits than its factorization.

6144889505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228977906.

The product of its (nonzero) digits is 1382400, while the sum is 50.

The square root of 6144889505 is about 78389.3456089538. The cubic root of 6144889505 is about 1831.6311717579.

The spelling of 6144889505 in words is "six billion, one hundred forty-four million, eight hundred eighty-nine thousand, five hundred five".