6781145174 has 16 divisors (see below), whose sum is σ = 10327633008. Its totient is φ = 3338641152.

The previous prime is 6781145171. The next prime is 6781145191. The reversal of 6781145174 is 4715411876.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6781145171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387134 + ... + 404270.

It is an arithmetic number, because the mean of its divisors is an integer number (645477063).

Almost surely, 2^6781145174 is an apocalyptic number.

6781145174 is a deficient number, since it is larger than the sum of its proper divisors (3546487834).

6781145174 is a wasteful number, since it uses less digits than its factorization.

6781145174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20159.

The product of its digits is 188160, while the sum is 44.

The square root of 6781145174 is about 82347.7089784531. The cubic root of 6781145174 is about 1892.7838164294.

The spelling of 6781145174 in words is "six billion, seven hundred eighty-one million, one hundred forty-five thousand, one hundred seventy-four".