20543628969352 has 16 divisors (see below), whose sum is σ = 38520527198400. Its totient is φ = 10271488383120.

The previous prime is 20543628969313. The next prime is 20543628969439. The reversal of 20543628969352 is 25396982634502.

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, 40494852 + ... + 40999027.

It is an arithmetic number, because the mean of its divisors is an integer number (2407532949900).

Almost surely, 2^{20543628969352} is an apocalyptic number.

It is an amenable number.

20543628969352 is a deficient number, since it is larger than the sum of its proper divisors (17976898229048).

20543628969352 is a wasteful number, since it uses less digits than its factorization.

20543628969352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81525396 (or 81525392 counting only the distinct ones).

The product of its (nonzero) digits is 167961600, while the sum is 64.

The spelling of 20543628969352 in words is "twenty trillion, five hundred forty-three billion, six hundred twenty-eight million, nine hundred sixty-nine thousand, three hundred fifty-two".