55485216000 has 576 divisors, whose sum is σ = 206623872000. Its totient is φ = 14662656000.

The previous prime is 55485215993. The next prime is 55485216037. The reversal of 55485216000 is 61258455.

55485216000 is a `hidden beast` number, since 5 + 5 + 48 + 5 + 2 + 1 + 600 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 128735785 + ... + 128736215.

It is an arithmetic number, because the mean of its divisors is an integer number (358722000).

Almost surely, 2^55485216000 is an apocalyptic number.

55485216000 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 55485216000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103311936000).

55485216000 is an abundant number, since it is smaller than the sum of its proper divisors (151138656000).

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

55485216000 is a wasteful number, since it uses less digits than its factorization.

55485216000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620 (or 590 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The spelling of 55485216000 in words is "fifty-five billion, four hundred eighty-five million, two hundred sixteen thousand".