556675270621 has 4 divisors (see below), whose sum is σ = 556909465372. Its totient is φ = 556441075872.

The previous prime is 556675270603. The next prime is 556675270717. The reversal of 556675270621 is 126072576655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 126072576655 = 5 ⋅25214515331.

It can be written as a sum of positive squares in 2 ways, for example, as 207925968121 + 348749302500 = 455989^2 + 590550^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-556675270621 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 (556675270321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117093810 + ... + 117098563.

It is an arithmetic number, because the mean of its divisors is an integer number (139227366343).

Almost surely, 2^556675270621 is an apocalyptic number.

It is an amenable number.

556675270621 is a deficient number, since it is larger than the sum of its proper divisors (234194751).

556675270621 is a wasteful number, since it uses less digits than its factorization.

556675270621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234194750.

The product of its (nonzero) digits is 5292000, while the sum is 52.

The spelling of 556675270621 in words is "five hundred fifty-six billion, six hundred seventy-five million, two hundred seventy thousand, six hundred twenty-one".