20522511242 has 8 divisors (see below), whose sum is σ = 31615760676. Its totient is φ = 9983924352.

The previous prime is 20522511241. The next prime is 20522511253. The reversal of 20522511242 is 24211522502.

It can be written as a sum of positive squares in 2 ways, for example, as 20417837881 + 104673361 = 142891^2 + 10231^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20522511241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138665543 + ... + 138665690.

Almost surely, 2^20522511242 is an apocalyptic number.

20522511242 is a deficient number, since it is larger than the sum of its proper divisors (11093249434).

20522511242 is a wasteful number, since it uses less digits than its factorization.

20522511242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277331272.

The product of its (nonzero) digits is 3200, while the sum is 26.

The spelling of 20522511242 in words is "twenty billion, five hundred twenty-two million, five hundred eleven thousand, two hundred forty-two".