20522204640460 has 12 divisors (see below), whose sum is σ = 43096629745008. Its totient is φ = 8208881856176.

The previous prime is 20522204640439. The next prime is 20522204640499. The reversal of 20522204640460 is 6404640222502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 513055115992 + ... + 513055116031.

It is an arithmetic number, because the mean of its divisors is an integer number (3591385812084).

Almost surely, 2^{20522204640460} is an apocalyptic number.

20522204640460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20522204640460 is an abundant number, since it is smaller than the sum of its proper divisors (22574425104548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20522204640460 is a wasteful number, since it uses less digits than its factorization.

20522204640460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026110232032 (or 1026110232030 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 37.

Adding to 20522204640460 its reverse (6404640222502), we get a palindrome (26926844862962).

The spelling of 20522204640460 in words is "twenty trillion, five hundred twenty-two billion, two hundred four million, six hundred forty thousand, four hundred sixty".