556561155601 has 8 divisors (see below), whose sum is σ = 614843164800. Its totient is φ = 499560069840.

The previous prime is 556561155569. The next prime is 556561155611. The reversal of 556561155601 is 106551165655.

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 556561155601 - 2⁵ = 556561155569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556561155611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320229946 + ... + 320231683.

It is an arithmetic number, because the mean of its divisors is an integer number (76855395600).

Almost surely, 2^556561155601 is an apocalyptic number.

It is an amenable number.

556561155601 is a deficient number, since it is larger than the sum of its proper divisors (58282009199).

556561155601 is a wasteful number, since it uses less digits than its factorization.

556561155601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640461719.

The product of its (nonzero) digits is 675000, while the sum is 46.

The spelling of 556561155601 in words is "five hundred fifty-six billion, five hundred sixty-one million, one hundred fifty-five thousand, six hundred one".