556405985802 has 16 divisors (see below), whose sum is σ = 1117468091520. Its totient is φ = 184692641952.

The previous prime is 556405985767. The next prime is 556405985809. The reversal of 556405985802 is 208589504655.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (556405985809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194003443 + ... + 194006310.

It is an arithmetic number, because the mean of its divisors is an integer number (69841755720).

Almost surely, 2^556405985802 is an apocalyptic number.

556405985802 is an abundant number, since it is smaller than the sum of its proper divisors (561062105718).

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

556405985802 is a wasteful number, since it uses less digits than its factorization.

556405985802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388009997.

The product of its (nonzero) digits is 17280000, while the sum is 57.

The spelling of 556405985802 in words is "five hundred fifty-six billion, four hundred five million, nine hundred eighty-five thousand, eight hundred two".