2781008085 has 32 divisors (see below), whose sum is σ = 4666521600. Its totient is φ = 1411553088.

The previous prime is 2781008071. The next prime is 2781008123. The reversal of 2781008085 is 5808001872.

It is not a de Polignac number, because 2781008085 - 2¹⁷ = 2780877013 is a prime.

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, 48402 + ... + 88908.

It is an arithmetic number, because the mean of its divisors is an integer number (145828800).

Almost surely, 2^2781008085 is an apocalyptic number.

It is an amenable number.

2781008085 is a deficient number, since it is larger than the sum of its proper divisors (1885513515).

2781008085 is a wasteful number, since it uses less digits than its factorization.

2781008085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40737.

The product of its (nonzero) digits is 35840, while the sum is 39.

The square root of 2781008085 is about 52735.2641502818. The cubic root of 2781008085 is about 1406.2658070717.

The spelling of 2781008085 in words is "two billion, seven hundred eighty-one million, eight thousand, eighty-five".