556165614221 has 16 divisors (see below), whose sum is σ = 655490707200. Its totient is φ = 461964808320.

The previous prime is 556165614217. The next prime is 556165614223. The reversal of 556165614221 is 122416561655.

It is a cyclic number.

It is not a de Polignac number, because 556165614221 - 2² = 556165614217 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556165614223) 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 15 ways as a sum of consecutive naturals, for example, 6460121 + ... + 6545646.

It is an arithmetic number, because the mean of its divisors is an integer number (40968169200).

Almost surely, 2^556165614221 is an apocalyptic number.

It is an amenable number.

556165614221 is a deficient number, since it is larger than the sum of its proper divisors (99325092979).

556165614221 is a wasteful number, since it uses less digits than its factorization.

556165614221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13005964.

The product of its digits is 432000, while the sum is 44.

The spelling of 556165614221 in words is "five hundred fifty-six billion, one hundred sixty-five million, six hundred fourteen thousand, two hundred twenty-one".