20522135345 has 8 divisors (see below), whose sum is σ = 24644585664. Its totient is φ = 16405692784.

The previous prime is 20522135341. The next prime is 20522135351. The reversal of 20522135345 is 54353122502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20522135345 - 2² = 20522135341 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20522135341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1494419 + ... + 1508088.

It is an arithmetic number, because the mean of its divisors is an integer number (3080573208).

Almost surely, 2^20522135345 is an apocalyptic number.

It is an amenable number.

20522135345 is a deficient number, since it is larger than the sum of its proper divisors (4122450319).

20522135345 is a wasteful number, since it uses less digits than its factorization.

20522135345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3003879.

The product of its (nonzero) digits is 36000, while the sum is 32.

Adding to 20522135345 its reverse (54353122502), we get a palindrome (74875257847).

The spelling of 20522135345 in words is "twenty billion, five hundred twenty-two million, one hundred thirty-five thousand, three hundred forty-five".