20522340452 has 12 divisors (see below), whose sum is σ = 35915112576. Its totient is φ = 10260879720.

The previous prime is 20522340451. The next prime is 20522340469. The reversal of 20522340452 is 25404322502.

It is not an unprimeable number, because it can be changed into a prime (20522340451) 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, 200177 + ... + 284807.

It is an arithmetic number, because the mean of its divisors is an integer number (2992926048).

Almost surely, 2^20522340452 is an apocalyptic number.

It is an amenable number.

20522340452 is a deficient number, since it is larger than the sum of its proper divisors (15392772124).

20522340452 is a wasteful number, since it uses less digits than its factorization.

20522340452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145258 (or 145256 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 29.

Adding to 20522340452 its reverse (25404322502), we get a palindrome (45926662954).

The spelling of 20522340452 in words is "twenty billion, five hundred twenty-two million, three hundred forty thousand, four hundred fifty-two".