556105363021 has 8 divisors (see below), whose sum is σ = 608700448664. Its totient is φ = 504912813120.

The previous prime is 556105363013. The next prime is 556105363057. The reversal of 556105363021 is 120363501655.

It can be written as a sum of positive squares in 4 ways, for example, as 100127944900 + 455977418121 = 316430^2 + 675261^2 .

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 556105363021 - 2³ = 556105363013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556105363721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350633106 + ... + 350634691.

It is an arithmetic number, because the mean of its divisors is an integer number (76087556083).

Almost surely, 2^556105363021 is an apocalyptic number.

It is an amenable number.

556105363021 is a deficient number, since it is larger than the sum of its proper divisors (52595085643).

556105363021 is a wasteful number, since it uses less digits than its factorization.

556105363021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701267871.

The product of its (nonzero) digits is 81000, while the sum is 37.

Adding to 556105363021 its reverse (120363501655), we get a palindrome (676468864676).

The spelling of 556105363021 in words is "five hundred fifty-six billion, one hundred five million, three hundred sixty-three thousand, twenty-one".