20535122232 has 24 divisors (see below), whose sum is σ = 55615956240. Its totient is φ = 6845040720.

The previous prime is 20535122197. The next prime is 20535122291. The reversal of 20535122232 is 23222153502.

20535122232 is a `hidden beast` number, since 2 + 0 + 535 + 122 + 2 + 3 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 20535122196 and 20535122205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 142604944 + ... + 142605087.

It is an arithmetic number, because the mean of its divisors is an integer number (2317331510).

Almost surely, 2^20535122232 is an apocalyptic number.

It is an amenable number.

20535122232 is an abundant number, since it is smaller than the sum of its proper divisors (35080834008).

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

20535122232 is a wasteful number, since it uses less digits than its factorization.

20535122232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285210043 (or 285210036 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 20535122232 its reverse (23222153502), we get a palindrome (43757275734).

The spelling of 20535122232 in words is "twenty billion, five hundred thirty-five million, one hundred twenty-two thousand, two hundred thirty-two".