20324784956568 has 16 divisors (see below), whose sum is σ = 50811962391480. Its totient is φ = 6774928318848.

The previous prime is 20324784956537. The next prime is 20324784956573. The reversal of 20324784956568 is 86565948742302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423433019905 + ... + 423433019952.

Almost surely, 2^{20324784956568} is an apocalyptic number.

It is an amenable number.

20324784956568 is an abundant number, since it is smaller than the sum of its proper divisors (30487177434912).

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

20324784956568 is a wasteful number, since it uses less digits than its factorization.

20324784956568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846866039866 (or 846866039862 counting only the distinct ones).

The product of its (nonzero) digits is 696729600, while the sum is 69.

The spelling of 20324784956568 in words is "twenty trillion, three hundred twenty-four billion, seven hundred eighty-four million, nine hundred fifty-six thousand, five hundred sixty-eight".