20550243413 has 8 divisors (see below), whose sum is σ = 23542048320. Its totient is φ = 17572452480.

The previous prime is 20550243361. The next prime is 20550243437. The reversal of 20550243413 is 31434205502.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20550243413 - 2¹⁰ = 20550242389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20550243473) 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, 3500348 + ... + 3506213.

It is an arithmetic number, because the mean of its divisors is an integer number (2942756040).

Almost surely, 2^20550243413 is an apocalyptic number.

It is an amenable number.

20550243413 is a deficient number, since it is larger than the sum of its proper divisors (2991804907).

20550243413 is an equidigital number, since it uses as much as digits as its factorization.

20550243413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7006987.

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 20550243413 its reverse (31434205502), we get a palindrome (51984448915).

The spelling of 20550243413 in words is "twenty billion, five hundred fifty million, two hundred forty-three thousand, four hundred thirteen".