556197053818 has 24 divisors (see below), whose sum is σ = 1027595760372. Its totient is φ = 224348390784.

The previous prime is 556197053807. The next prime is 556197053821. The reversal of 556197053818 is 818350791655.

It can be written as a sum of positive squares in 2 ways, for example, as 554508090409 + 1688963409 = 744653^2 + 41097^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166924221 + ... + 166927552.

Almost surely, 2^556197053818 is an apocalyptic number.

556197053818 is a deficient number, since it is larger than the sum of its proper divisors (471398706554).

556197053818 is a wasteful number, since it uses less digits than its factorization.

556197053818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333851806 (or 333851799 counting only the distinct ones).

The product of its (nonzero) digits is 9072000, while the sum is 58.

The spelling of 556197053818 in words is "five hundred fifty-six billion, one hundred ninety-seven million, fifty-three thousand, eight hundred eighteen".