20402113352 has 24 divisors (see below), whose sum is σ = 38424504690. Its totient is φ = 10155605760.

The previous prime is 20402113351. The next prime is 20402113357. The reversal of 20402113352 is 25331120402.

It can be written as a sum of positive squares in 3 ways, for example, as 16467562276 + 3934551076 = 128326^2 + 62726^2 .

It is not an unprimeable number, because it can be changed into a prime (20402113351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6270158 + ... + 6273410.

Almost surely, 2^20402113352 is an apocalyptic number.

It is an amenable number.

20402113352 is a deficient number, since it is larger than the sum of its proper divisors (18022391338).

20402113352 is an frugal number, since it uses more digits than its factorization.

20402113352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6753 (or 3496 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 20402113352 its reverse (25331120402), we get a palindrome (45733233754).

The spelling of 20402113352 in words is "twenty billion, four hundred two million, one hundred thirteen thousand, three hundred fifty-two".