2678344785 has 96 divisors (see below), whose sum is σ = 5103745920. Its totient is φ = 1343692800.

The previous prime is 2678344763. The next prime is 2678344813. The reversal of 2678344785 is 5874438762.

It is not a de Polignac number, because 2678344785 - 2¹² = 2678340689 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4178065 + ... + 4178705.

It is an arithmetic number, because the mean of its divisors is an integer number (53164020).

Almost surely, 2^2678344785 is an apocalyptic number.

It is an amenable number.

2678344785 is a deficient number, since it is larger than the sum of its proper divisors (2425401135).

2678344785 is a wasteful number, since it uses less digits than its factorization.

2678344785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861 (or 849 counting only the distinct ones).

The product of its digits is 9031680, while the sum is 54.

The square root of 2678344785 is about 51752.7273194370. The cubic root of 2678344785 is about 1388.7438896366.

The spelling of 2678344785 in words is "two billion, six hundred seventy-eight million, three hundred forty-four thousand, seven hundred eighty-five".