20634002443636 has 48 divisors (see below), whose sum is σ = 37238547580416. Its totient is φ = 9998726471424.

The previous prime is 20634002443573. The next prime is 20634002443657. The reversal of 20634002443636 is 63634420043602.

It is a junction number, because it is equal to n+sod(n) for n = 20634002443592 and 20634002443601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 343429230 + ... + 343489306.

It is an arithmetic number, because the mean of its divisors is an integer number (775803074592).

Almost surely, 2^{20634002443636} is an apocalyptic number.

It is an amenable number.

20634002443636 is a deficient number, since it is larger than the sum of its proper divisors (16604545136780).

20634002443636 is a wasteful number, since it uses less digits than its factorization.

20634002443636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77968 (or 77966 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 43.

The spelling of 20634002443636 in words is "twenty trillion, six hundred thirty-four billion, two million, four hundred forty-three thousand, six hundred thirty-six".