20235163333550 has 48 divisors (see below), whose sum is σ = 41104255980672. Its totient is φ = 7350128306400.

The previous prime is 20235163333513. The next prime is 20235163333559. The reversal of 20235163333550 is 5533336153202.

It is a junction number, because it is equal to n+sod(n) for n = 20235163333498 and 20235163333507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20235163333559) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19782962 + ... + 20780661.

It is an arithmetic number, because the mean of its divisors is an integer number (856338666264).

Almost surely, 2^{20235163333550} is an apocalyptic number.

20235163333550 is an abundant number, since it is smaller than the sum of its proper divisors (20869092647122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20235163333550 is a wasteful number, since it uses less digits than its factorization.

20235163333550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40564553 (or 40564548 counting only the distinct ones).

The product of its (nonzero) digits is 729000, while the sum is 41.

Adding to 20235163333550 its reverse (5533336153202), we get a palindrome (25768499486752).

The spelling of 20235163333550 in words is "twenty trillion, two hundred thirty-five billion, one hundred sixty-three million, three hundred thirty-three thousand, five hundred fifty".