20040046636 has 12 divisors (see below), whose sum is σ = 35080129000. Its totient is φ = 10017152640.

The previous prime is 20040046589. The next prime is 20040046673. The reversal of 20040046636 is 63664004002.

It is a junction number, because it is equal to n+sod(n) for n = 20040046598 and 20040046607.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 701925 + ... + 729916.

Almost surely, 2^20040046636 is an apocalyptic number.

It is an amenable number.

20040046636 is a deficient number, since it is larger than the sum of its proper divisors (15040082364).

20040046636 is a wasteful number, since it uses less digits than its factorization.

20040046636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435344 (or 1435342 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

The spelling of 20040046636 in words is "twenty billion, forty million, forty-six thousand, six hundred thirty-six".