556789972901 has 16 divisors (see below), whose sum is σ = 570678820800. Its totient is φ = 543072169728.

The previous prime is 556789972889. The next prime is 556789972913. The reversal of 556789972901 is 109279987655.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (556789972889) and next prime (556789972913).

It is a cyclic number.

It is not a de Polignac number, because 556789972901 - 2²⁶ = 556722864037 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 (556789975901) 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, 10848566 + ... + 10899768.

It is an arithmetic number, because the mean of its divisors is an integer number (35667426300).

Almost surely, 2^556789972901 is an apocalyptic number.

It is an amenable number.

556789972901 is a deficient number, since it is larger than the sum of its proper divisors (13888847899).

556789972901 is a wasteful number, since it uses less digits than its factorization.

556789972901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52868.

The product of its (nonzero) digits is 85730400, while the sum is 68.

The spelling of 556789972901 in words is "five hundred fifty-six billion, seven hundred eighty-nine million, nine hundred seventy-two thousand, nine hundred one".