20432203552534 has 4 divisors (see below), whose sum is σ = 30648305328804. Its totient is φ = 10216101776266.

The previous prime is 20432203552427. The next prime is 20432203552543. The reversal of 20432203552534 is 43525530223402.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5108050888132 + ... + 5108050888135.

It is an arithmetic number, because the mean of its divisors is an integer number (7662076332201).

Almost surely, 2^{20432203552534} is an apocalyptic number.

20432203552534 is a deficient number, since it is larger than the sum of its proper divisors (10216101776270).

20432203552534 is a wasteful number, since it uses less digits than its factorization.

20432203552534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10216101776269.

The product of its (nonzero) digits is 864000, while the sum is 40.

Adding to 20432203552534 its reverse (43525530223402), we get a palindrome (63957733775936).

The spelling of 20432203552534 in words is "twenty trillion, four hundred thirty-two billion, two hundred three million, five hundred fifty-two thousand, five hundred thirty-four".