2009785984623 has 32 divisors (see below), whose sum is σ = 3242244000000. Its totient is φ = 1225568213856.

The previous prime is 2009785984589. The next prime is 2009785984673. The reversal of 2009785984623 is 3264895879002.

2009785984623 is a `hidden beast` number, since 2 + 0 + 0 + 9 + 7 + 85 + 98 + 462 + 3 = 666.

It is not a de Polignac number, because 2009785984623 - 2³³ = 2001196050031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2009785984673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67531873 + ... + 67561626.

It is an arithmetic number, because the mean of its divisors is an integer number (101320125000).

Almost surely, 2^{2009785984623} is an apocalyptic number.

2009785984623 is a deficient number, since it is larger than the sum of its proper divisors (1232458015377).

2009785984623 is a wasteful number, since it uses less digits than its factorization.

2009785984623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135093556 (or 135093550 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 63.

The spelling of 2009785984623 in words is "two trillion, nine billion, seven hundred eighty-five million, nine hundred eighty-four thousand, six hundred twenty-three".