2985549255691 has 2 divisors, whose sum is σ = 2985549255692. Its totient is φ = 2985549255690.

The previous prime is 2985549255673. The next prime is 2985549255743. The reversal of 2985549255691 is 1965529455892.

2985549255691 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2985549255691 - 2⁹ = 2985549255179 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2985549255691.

It is not a weakly prime, because it can be changed into another prime (2985549255641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1492774627845 + 1492774627846.

It is an arithmetic number, because the mean of its divisors is an integer number (1492774627846).

Almost surely, 2^{2985549255691} is an apocalyptic number.

2985549255691 is a deficient number, since it is larger than the sum of its proper divisors (1).

2985549255691 is an equidigital number, since it uses as much as digits as its factorization.

2985549255691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 349920000, while the sum is 70.

The spelling of 2985549255691 in words is "two trillion, nine hundred eighty-five billion, five hundred forty-nine million, two hundred fifty-five thousand, six hundred ninety-one".