556234747621 has 16 divisors (see below), whose sum is σ = 645873184000. Its totient is φ = 469170154368.

The previous prime is 556234747619. The next prime is 556234747643. The reversal of 556234747621 is 126747432655.

It is not a de Polignac number, because 556234747621 - 2¹ = 556234747619 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 (556234747661) 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 15 ways as a sum of consecutive naturals, for example, 1015446 + ... + 1464103.

It is an arithmetic number, because the mean of its divisors is an integer number (40367074000).

Almost surely, 2^556234747621 is an apocalyptic number.

It is an amenable number.

556234747621 is a deficient number, since it is larger than the sum of its proper divisors (89638436379).

556234747621 is a wasteful number, since it uses less digits than its factorization.

556234747621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2480068.

The product of its digits is 8467200, while the sum is 52.

The spelling of 556234747621 in words is "five hundred fifty-six billion, two hundred thirty-four million, seven hundred forty-seven thousand, six hundred twenty-one".