20255243543356 has 24 divisors (see below), whose sum is σ = 35665234097024. Its totient is φ = 10065180469680.

The previous prime is 20255243543299. The next prime is 20255243543357. The reversal of 20255243543356 is 65334534255202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20255243543357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21585361 + ... + 22504183.

Almost surely, 2^{20255243543356} is an apocalyptic number.

It is an amenable number.

20255243543356 is a deficient number, since it is larger than the sum of its proper divisors (15409990553668).

20255243543356 is a wasteful number, since it uses less digits than its factorization.

20255243543356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952801 (or 952799 counting only the distinct ones).

The product of its (nonzero) digits is 12960000, while the sum is 49.

Adding to 20255243543356 its reverse (65334534255202), we get a palindrome (85589777798558).

The spelling of 20255243543356 in words is "twenty trillion, two hundred fifty-five billion, two hundred forty-three million, five hundred forty-three thousand, three hundred fifty-six".