20204223530356 has 24 divisors (see below), whose sum is σ = 35429639149800. Its totient is φ = 10081490524800.

The previous prime is 20204223530303. The next prime is 20204223530389. The reversal of 20204223530356 is 65303532240202.

It can be written as a sum of positive squares in 4 ways, for example, as 4037551721956 + 16166671808400 = 2009366^2 + 4020780^2 .

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, 1214370 + ... + 6471718.

It is an arithmetic number, because the mean of its divisors is an integer number (1476234964575).

Almost surely, 2^{20204223530356} is an apocalyptic number.

It is an amenable number.

20204223530356 is a deficient number, since it is larger than the sum of its proper divisors (15225415619444).

20204223530356 is a wasteful number, since it uses less digits than its factorization.

20204223530356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5259315 (or 5259313 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 37.

Adding to 20204223530356 its reverse (65303532240202), we get a palindrome (85507755770558).

The spelling of 20204223530356 in words is "twenty trillion, two hundred four billion, two hundred twenty-three million, five hundred thirty thousand, three hundred fifty-six".