20255366356 has 24 divisors (see below), whose sum is σ = 35991400424. Its totient is φ = 9972564480.

The previous prime is 20255366353. The next prime is 20255366377. The reversal of 20255366356 is 65366355202.

It can be written as a sum of positive squares in 4 ways, for example, as 1502802756 + 18752563600 = 38766^2 + 136940^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20255366353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122416 + ... + 235576.

Almost surely, 2^20255366356 is an apocalyptic number.

It is an amenable number.

20255366356 is a deficient number, since it is larger than the sum of its proper divisors (15736034068).

20255366356 is a wasteful number, since it uses less digits than its factorization.

20255366356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113851 (or 113849 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 43.

The spelling of 20255366356 in words is "twenty billion, two hundred fifty-five million, three hundred sixty-six thousand, three hundred fifty-six".