20543401024 has 14 divisors (see below), whose sum is σ = 40765811534. Its totient is φ = 10271700480.

The previous prime is 20543401003. The next prime is 20543401057. The reversal of 20543401024 is 42010434502.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12687769600 + 7855631424 = 112640^2 + 88632^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20543401024.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160495257 + ... + 160495384.

It is an arithmetic number, because the mean of its divisors is an integer number (2911843681).

Almost surely, 2^20543401024 is an apocalyptic number.

It is an amenable number.

20543401024 is a deficient number, since it is larger than the sum of its proper divisors (20222410510).

20543401024 is an equidigital number, since it uses as much as digits as its factorization.

20543401024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320990653 (or 320990643 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 20543401024 its reverse (42010434502), we get a palindrome (62553835526).

The spelling of 20543401024 in words is "twenty billion, five hundred forty-three million, four hundred one thousand, twenty-four".