920568019685 has 4 divisors (see below), whose sum is σ = 1104681623628. Its totient is φ = 736454415744.

The previous prime is 920568019649. The next prime is 920568019703. The reversal of 920568019685 is 586910865029.

920568019685 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 586910865029 = 11821 ⋅49649849.

It can be written as a sum of positive squares in 2 ways, for example, as 130847869441 + 789720150244 = 361729^2 + 888662^2 .

It is a cyclic number.

It is not a de Polignac number, because 920568019685 - 2¹⁴ = 920568003301 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, 92056801964 + ... + 92056801973.

It is an arithmetic number, because the mean of its divisors is an integer number (276170405907).

Almost surely, 2^920568019685 is an apocalyptic number.

It is an amenable number.

920568019685 is a deficient number, since it is larger than the sum of its proper divisors (184113603943).

920568019685 is a wasteful number, since it uses less digits than its factorization.

920568019685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184113603942.

The product of its (nonzero) digits is 9331200, while the sum is 59.

The spelling of 920568019685 in words is "nine hundred twenty billion, five hundred sixty-eight million, nineteen thousand, six hundred eighty-five".