556440909093 has 20 divisors (see below), whose sum is σ = 853692130060. Its totient is φ = 360934641792.

The previous prime is 556440909071. The next prime is 556440909097. The reversal of 556440909093 is 390909044655.

556440909093 is a `hidden beast` number, since 5 + 5 + 64 + 409 + 0 + 90 + 93 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 501714389124 + 54726519969 = 708318^2 + 233937^2 .

It is not a de Polignac number, because 556440909093 - 2⁵ = 556440909061 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 (556440909097) 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 19 ways as a sum of consecutive naturals, for example, 92829988 + ... + 92835981.

It is an arithmetic number, because the mean of its divisors is an integer number (42684606503).

Almost surely, 2^556440909093 is an apocalyptic number.

It is an amenable number.

556440909093 is a deficient number, since it is larger than the sum of its proper divisors (297251220967).

556440909093 is a wasteful number, since it uses less digits than its factorization.

556440909093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185666018 (or 185666009 counting only the distinct ones).

The product of its (nonzero) digits is 5248800, while the sum is 54.

The spelling of 556440909093 in words is "five hundred fifty-six billion, four hundred forty million, nine hundred nine thousand, ninety-three".