20535512235 has 32 divisors (see below), whose sum is σ = 38259164160. Its totient is φ = 9210534528.

The previous prime is 20535512233. The next prime is 20535512267. The reversal of 20535512235 is 53221553502.

It is not a de Polignac number, because 20535512235 - 2¹ = 20535512233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20535512196 and 20535512205.

It is not an unprimeable number, because it can be changed into a prime (20535512233) 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 31 ways as a sum of consecutive naturals, for example, 1839495 + ... + 1850624.

It is an arithmetic number, because the mean of its divisors is an integer number (1195598880).

Almost surely, 2^20535512235 is an apocalyptic number.

20535512235 is a deficient number, since it is larger than the sum of its proper divisors (17723651925).

20535512235 is a wasteful number, since it uses less digits than its factorization.

20535512235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3690187.

The product of its (nonzero) digits is 45000, while the sum is 33.

The spelling of 20535512235 in words is "twenty billion, five hundred thirty-five million, five hundred twelve thousand, two hundred thirty-five".