556823394436 has 81 divisors (see below), whose sum is σ = 1046598256431. Its totient is φ = 259178237568.

The previous prime is 556823394353. The next prime is 556823394437. The reversal of 556823394436 is 634493328655.

The square root of 556823394436 is 746206.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 108919800900 + 447903593536 = 330030^2 + 669256^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556823394437) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2069975310 + ... + 2069975578.

Almost surely, 2^556823394436 is an apocalyptic number.

556823394436 is the 746206-th square number.

It is an amenable number.

556823394436 is a deficient number, since it is larger than the sum of its proper divisors (489774861995).

556823394436 is an equidigital number, since it uses as much as digits as its factorization.

556823394436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726 (or 363 counting only the distinct ones).

The product of its digits is 55987200, while the sum is 58.

The spelling of 556823394436 in words is "five hundred fifty-six billion, eight hundred twenty-three million, three hundred ninety-four thousand, four hundred thirty-six".