6774381144 has 144 divisors (see below), whose sum is σ = 19959895800. Its totient is φ = 2069867520.

The previous prime is 6774381139. The next prime is 6774381151. The reversal of 6774381144 is 4411834776.

6774381144 is a `hidden beast` number, since 6 + 77 + 438 + 1 + 144 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 6774381144.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1312072 + ... + 1317224.

Almost surely, 2^6774381144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6774381144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9979947900).

6774381144 is an abundant number, since it is smaller than the sum of its proper divisors (13185514656).

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

6774381144 is a wasteful number, since it uses less digits than its factorization.

6774381144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5246 (or 5208 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 6774381144 is about 82306.6287974426. The cubic root of 6774381144 is about 1892.1542715470.

The spelling of 6774381144 in words is "six billion, seven hundred seventy-four million, three hundred eighty-one thousand, one hundred forty-four".