2074840636685 has 4 divisors (see below), whose sum is σ = 2489808764028. Its totient is φ = 1659872509344.

The previous prime is 2074840636657. The next prime is 2074840636711. The reversal of 2074840636685 is 5866360484702.

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

It can be written as a sum of positive squares in 2 ways, for example, as 862723311241 + 1212117325444 = 928829^2 + 1100962^2 .

It is a cyclic number.

It is not a de Polignac number, because 2074840636685 - 2²⁴ = 2074823859469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207484063664 + ... + 207484063673.

It is an arithmetic number, because the mean of its divisors is an integer number (622452191007).

Almost surely, 2^{2074840636685} is an apocalyptic number.

It is an amenable number.

2074840636685 is a deficient number, since it is larger than the sum of its proper divisors (414968127343).

2074840636685 is an equidigital number, since it uses as much as digits as its factorization.

2074840636685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414968127342.

The product of its (nonzero) digits is 46448640, while the sum is 59.

The spelling of 2074840636685 in words is "two trillion, seventy-four billion, eight hundred forty million, six hundred thirty-six thousand, six hundred eighty-five".