20522340215 has 8 divisors (see below), whose sum is σ = 26521178208. Its totient is φ = 15154958880.

The previous prime is 20522340199. The next prime is 20522340221. The reversal of 20522340215 is 51204322502.

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

It is not a de Polignac number, because 20522340215 - 2⁴ = 20522340199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157864091 + ... + 157864220.

It is an arithmetic number, because the mean of its divisors is an integer number (3315147276).

Almost surely, 2^20522340215 is an apocalyptic number.

20522340215 is a deficient number, since it is larger than the sum of its proper divisors (5998837993).

20522340215 is a wasteful number, since it uses less digits than its factorization.

20522340215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315728329.

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 20522340215 its reverse (51204322502), we get a palindrome (71726662717).

The spelling of 20522340215 in words is "twenty billion, five hundred twenty-two million, three hundred forty thousand, two hundred fifteen".