556506600061 has 4 divisors (see below), whose sum is σ = 556513356124. Its totient is φ = 556499844000.

The previous prime is 556506600049. The next prime is 556506600071. The reversal of 556506600061 is 160006605655.

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

It can be written as a sum of positive squares in 2 ways, for example, as 470724976836 + 85781623225 = 686094^2 + 292885^2 .

It is a cyclic number.

It is not a de Polignac number, because 556506600061 - 2²⁷ = 556372382333 is a prime.

It is a super-2 number, since 2×556506600061² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 556506599987 and 556506600023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556506600031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3252930 + ... + 3419731.

It is an arithmetic number, because the mean of its divisors is an integer number (139128339031).

Almost surely, 2^556506600061 is an apocalyptic number.

It is an amenable number.

556506600061 is a deficient number, since it is larger than the sum of its proper divisors (6756063).

556506600061 is an equidigital number, since it uses as much as digits as its factorization.

556506600061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6756062.

The product of its (nonzero) digits is 162000, while the sum is 40.

The spelling of 556506600061 in words is "five hundred fifty-six billion, five hundred six million, six hundred thousand, sixty-one".