555641856000 has 2688 divisors, whose sum is σ = 2679241743360. Its totient is φ = 111476736000.

The previous prime is 555641855999. The next prime is 555641856059. The reversal of 555641856000 is 658146555.

555641856000 is a `hidden beast` number, since 5 + 5 + 564 + 1 + 85 + 6 + 0 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (2688).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 19160063986 + ... + 19160064014.

It is an arithmetic number, because the mean of its divisors is an integer number (996741720).

Almost surely, 2^555641856000 is an apocalyptic number.

555641856000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 555641856000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1339620871680).

555641856000 is an abundant number, since it is smaller than the sum of its proper divisors (2123599887360).

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

555641856000 is an equidigital number, since it uses as much as digits as its factorization.

555641856000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 45.

The spelling of 555641856000 in words is "five hundred fifty-five billion, six hundred forty-one million, eight hundred fifty-six thousand".