2781788716 has 12 divisors (see below), whose sum is σ = 5563577488. Its totient is φ = 1192195152.

The previous prime is 2781788683. The next prime is 2781788731. The reversal of 2781788716 is 6178871872.

2781788716 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49674771 + ... + 49674826.

Almost surely, 2^2781788716 is an apocalyptic number.

It is an amenable number.

2781788716 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2781788716 is a wasteful number, since it uses less digits than its factorization.

2781788716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99349608 (or 99349606 counting only the distinct ones).

The product of its digits is 2107392, while the sum is 55.

The square root of 2781788716 is about 52742.6650445349. The cubic root of 2781788716 is about 1406.3973747084.

The spelling of 2781788716 in words is "two billion, seven hundred eighty-one million, seven hundred eighty-eight thousand, seven hundred sixteen".