556206311291 has 4 divisors (see below), whose sum is σ = 557800026000. Its totient is φ = 554612596584.

The previous prime is 556206311267. The next prime is 556206311299. The reversal of 556206311291 is 192113602655.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 556206311291 - 2¹⁴ = 556206294907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556206311299) 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 3 ways as a sum of consecutive naturals, for example, 796856831 + ... + 796857528.

It is an arithmetic number, because the mean of its divisors is an integer number (139450006500).

Almost surely, 2^556206311291 is an apocalyptic number.

556206311291 is a deficient number, since it is larger than the sum of its proper divisors (1593714709).

556206311291 is a wasteful number, since it uses less digits than its factorization.

556206311291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1593714708.

The product of its (nonzero) digits is 97200, while the sum is 41.

The spelling of 556206311291 in words is "five hundred fifty-six billion, two hundred six million, three hundred eleven thousand, two hundred ninety-one".