556011055509 has 128 divisors (see below), whose sum is σ = 989808906240. Its totient is φ = 269271281664.

The previous prime is 556011055507. The next prime is 556011055597. The reversal of 556011055509 is 905550110655.

556011055509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 556011055509 - 2¹ = 556011055507 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556011055507) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 245261794 + ... + 245264060.

It is an arithmetic number, because the mean of its divisors is an integer number (7732882080).

Almost surely, 2^556011055509 is an apocalyptic number.

It is an amenable number.

556011055509 is a deficient number, since it is larger than the sum of its proper divisors (433797850731).

556011055509 is a wasteful number, since it uses less digits than its factorization.

556011055509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3579.

The product of its (nonzero) digits is 168750, while the sum is 42.

The spelling of 556011055509 in words is "five hundred fifty-six billion, eleven million, fifty-five thousand, five hundred nine".