20534360423836 has 24 divisors (see below), whose sum is σ = 41216983393376. Its totient is φ = 8768669636160.

The previous prime is 20534360423779. The next prime is 20534360423869. The reversal of 20534360423836 is 63832406343502.

It is a self number, because there is not a number n which added to its sum of digits gives 20534360423836.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1323764835 + ... + 1323780346.

Almost surely, 2^{20534360423836} is an apocalyptic number.

It is an amenable number.

20534360423836 is an abundant number, since it is smaller than the sum of its proper divisors (20682622969540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20534360423836 is a wasteful number, since it uses less digits than its factorization.

20534360423836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2647545469 (or 2647545467 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 49.

The spelling of 20534360423836 in words is "twenty trillion, five hundred thirty-four billion, three hundred sixty million, four hundred twenty-three thousand, eight hundred thirty-six".