20202986252543 has 16 divisors (see below), whose sum is σ = 20991761608704. Its totient is φ = 19422827779680.

The previous prime is 20202986252521. The next prime is 20202986252573. The reversal of 20202986252543 is 34525268920202.

It is a cyclic number.

It is not a de Polignac number, because 20202986252543 - 2⁶ = 20202986252479 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20202986252491 and 20202986252500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202986252573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23855546 + ... + 24687912.

It is an arithmetic number, because the mean of its divisors is an integer number (1311985100544).

Almost surely, 2^{20202986252543} is an apocalyptic number.

20202986252543 is a deficient number, since it is larger than the sum of its proper divisors (788775356161).

20202986252543 is a wasteful number, since it uses less digits than its factorization.

20202986252543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837542.

The product of its (nonzero) digits is 4147200, while the sum is 50.

The spelling of 20202986252543 in words is "twenty trillion, two hundred two billion, nine hundred eighty-six million, two hundred fifty-two thousand, five hundred forty-three".