556348819818 has 32 divisors (see below), whose sum is σ = 1215655710912. Its totient is φ = 168340032000.

The previous prime is 556348819781. The next prime is 556348819837. The reversal of 556348819818 is 818918843655.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

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, 6218233 + ... + 6307068.

It is an arithmetic number, because the mean of its divisors is an integer number (37989240966).

Almost surely, 2^556348819818 is an apocalyptic number.

556348819818 is an abundant number, since it is smaller than the sum of its proper divisors (659306891094).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

556348819818 is a wasteful number, since it uses less digits than its factorization.

556348819818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12525990.

The product of its digits is 66355200, while the sum is 66.

The spelling of 556348819818 in words is "five hundred fifty-six billion, three hundred forty-eight million, eight hundred nineteen thousand, eight hundred eighteen".