2085809697270 has 128 divisors (see below), whose sum is σ = 6074384762880. Its totient is φ = 506198609280.

The previous prime is 2085809697259. The next prime is 2085809697271. The reversal of 2085809697270 is 727969085802.

2085809697270 is a `hidden beast` number, since 20 + 8 + 580 + 9 + 6 + 9 + 7 + 27 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 2085809697198 and 2085809697207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2085809697271) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3935634 + ... + 4434053.

It is an arithmetic number, because the mean of its divisors is an integer number (47456130960).

Almost surely, 2^{2085809697270} is an apocalyptic number.

2085809697270 is an abundant number, since it is smaller than the sum of its proper divisors (3988575065610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2085809697270 is a wasteful number, since it uses less digits than its factorization.

2085809697270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8369787 (or 8369781 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 63.

The spelling of 2085809697270 in words is "two trillion, eighty-five billion, eight hundred nine million, six hundred ninety-seven thousand, two hundred seventy".