2785320840653 has 16 divisors (see below), whose sum is σ = 3073712818176. Its totient is φ = 2507690404800.

The previous prime is 2785320840559. The next prime is 2785320840707. The reversal of 2785320840653 is 3560480235872.

It is a cyclic number.

It is not a de Polignac number, because 2785320840653 - 2¹⁰ = 2785320839629 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2785320840595 and 2785320840604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2785320845653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3162125 + ... + 3945842.

It is an arithmetic number, because the mean of its divisors is an integer number (192107051136).

Almost surely, 2^{2785320840653} is an apocalyptic number.

It is an amenable number.

2785320840653 is a deficient number, since it is larger than the sum of its proper divisors (288391977523).

2785320840653 is a wasteful number, since it uses less digits than its factorization.

2785320840653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7108724.

The product of its (nonzero) digits is 9676800, while the sum is 53.

The spelling of 2785320840653 in words is "two trillion, seven hundred eighty-five billion, three hundred twenty million, eight hundred forty thousand, six hundred fifty-three".