20553321050 has 24 divisors (see below), whose sum is σ = 38237586492. Its totient is φ = 8219520000.

The previous prime is 20553321043. The next prime is 20553321071. The reversal of 20553321050 is 5012335502.

It can be written as a sum of positive squares in 6 ways, for example, as 13433505409 + 7119815641 = 115903^2 + 84379^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 197240 + ... + 282860.

Almost surely, 2^20553321050 is an apocalyptic number.

20553321050 is a deficient number, since it is larger than the sum of its proper divisors (17684265442).

20553321050 is a wasteful number, since it uses less digits than its factorization.

20553321050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90434 (or 90429 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 26.

Adding to 20553321050 its reverse (5012335502), we get a palindrome (25565656552).

The spelling of 20553321050 in words is "twenty billion, five hundred fifty-three million, three hundred twenty-one thousand, fifty".