556435978212840 has 96 divisors (see below), whose sum is σ = 1834859134815840. Its totient is φ = 134893570472320.

The previous prime is 556435978212809. The next prime is 556435978212847. The reversal of 556435978212840 is 48212879534655.

It is not an unprimeable number, because it can be changed into a prime (556435978212847) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19161004014 + ... + 19161033053.

It is an arithmetic number, because the mean of its divisors is an integer number (19113115987665).

It is a 1-persistent number, because it is pandigital, but 2⋅556435978212840 = 1112871956425680 is not.

Almost surely, 2^{556435978212840} is an apocalyptic number.

It is an amenable number.

556435978212840 is an abundant number, since it is smaller than the sum of its proper divisors (1278423156603000).

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

556435978212840 is a wasteful number, since it uses less digits than its factorization.

556435978212840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38322037103 (or 38322037088 counting only the distinct ones).

The product of its (nonzero) digits is 580608000, while the sum is 69.

The spelling of 556435978212840 in words is "five hundred fifty-six trillion, four hundred thirty-five billion, nine hundred seventy-eight million, two hundred twelve thousand, eight hundred forty".