2856842788691 has 4 divisors (see below), whose sum is σ = 2857526738952. Its totient is φ = 2856158838432.

The previous prime is 2856842788673. The next prime is 2856842788693. The reversal of 2856842788691 is 1968872486582.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2856842788691 - 2¹⁴ = 2856842772307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2856842788693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341968865 + ... + 341977218.

It is an arithmetic number, because the mean of its divisors is an integer number (714381684738).

Almost surely, 2^{2856842788691} is an apocalyptic number.

2856842788691 is a deficient number, since it is larger than the sum of its proper divisors (683950261).

2856842788691 is an equidigital number, since it uses as much as digits as its factorization.

2856842788691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683950260.

The product of its digits is 743178240, while the sum is 74.

The spelling of 2856842788691 in words is "two trillion, eight hundred fifty-six billion, eight hundred forty-two million, seven hundred eighty-eight thousand, six hundred ninety-one".