556115110661 has 8 divisors (see below), whose sum is σ = 618117653664. Its totient is φ = 496020338320.

The previous prime is 556115110637. The next prime is 556115110697. The reversal of 556115110661 is 166011511655.

It is a happy number.

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 556115110661 - 2³⁴ = 538935241477 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 (556115110601) 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 7 ways as a sum of consecutive naturals, for example, 476942051 + ... + 476943216.

It is an arithmetic number, because the mean of its divisors is an integer number (77264706708).

Almost surely, 2^556115110661 is an apocalyptic number.

It is an amenable number.

556115110661 is a deficient number, since it is larger than the sum of its proper divisors (62002543003).

556115110661 is a wasteful number, since it uses less digits than its factorization.

556115110661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953885331.

The product of its (nonzero) digits is 27000, while the sum is 38.

The spelling of 556115110661 in words is "five hundred fifty-six billion, one hundred fifteen million, one hundred ten thousand, six hundred sixty-one".