6781237812 has 24 divisors (see below), whose sum is σ = 17580987200. Its totient is φ = 2260412568.

The previous prime is 6781237783. The next prime is 6781237843. The reversal of 6781237812 is 2187321876.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31394512 + ... + 31394727.

Almost surely, 2^6781237812 is an apocalyptic number.

It is an amenable number.

6781237812 is an abundant number, since it is smaller than the sum of its proper divisors (10799749388).

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

6781237812 is a wasteful number, since it uses less digits than its factorization.

6781237812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62789252 (or 62789244 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 6781237812 is about 82348.2714572686. The cubic root of 6781237812 is about 1892.7924355689.

The spelling of 6781237812 in words is "six billion, seven hundred eighty-one million, two hundred thirty-seven thousand, eight hundred twelve".