551243120113 has 16 divisors (see below), whose sum is σ = 669963415680. Its totient is φ = 442758387456.

The previous prime is 551243120107. The next prime is 551243120161. The reversal of 551243120113 is 311021342155.

It is not a de Polignac number, because 551243120113 - 2⁹ = 551243119601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551243120413) 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 15 ways as a sum of consecutive naturals, for example, 10086931 + ... + 10141432.

It is an arithmetic number, because the mean of its divisors is an integer number (41872713480).

Almost surely, 2^551243120113 is an apocalyptic number.

It is an amenable number.

551243120113 is a deficient number, since it is larger than the sum of its proper divisors (118720295567).

551243120113 is a wasteful number, since it uses less digits than its factorization.

551243120113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20228616.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 551243120113 its reverse (311021342155), we get a palindrome (862264462268).

The spelling of 551243120113 in words is "five hundred fifty-one billion, two hundred forty-three million, one hundred twenty thousand, one hundred thirteen".