6844769136 has 160 divisors (see below), whose sum is σ = 19885393920. Its totient is φ = 2254127616.

The previous prime is 6844769117. The next prime is 6844769159. The reversal of 6844769136 is 6319674486.

6844769136 is a `hidden beast` number, since 6 + 8 + 447 + 69 + 136 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

Its product of digits (5225472) is a multiple of the sum of its prime divisors (768).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21868116 + ... + 21868428.

It is an arithmetic number, because the mean of its divisors is an integer number (124283712).

Almost surely, 2^6844769136 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 6844769136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9942696960).

6844769136 is an abundant number, since it is smaller than the sum of its proper divisors (13040624784).

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

6844769136 is a wasteful number, since it uses less digits than its factorization.

6844769136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780 (or 768 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 54.

The square root of 6844769136 is about 82733.1199460047. The cubic root of 6844769136 is about 1898.6850676551.

The spelling of 6844769136 in words is "six billion, eight hundred forty-four million, seven hundred sixty-nine thousand, one hundred thirty-six".