55471288320 has 1040 divisors, whose sum is σ = 241482212928. Its totient is φ = 11890851840.

The previous prime is 55471288283. The next prime is 55471288339. The reversal of 55471288320 is 2388217455.

55471288320 is a `hidden beast` number, since 5 + 5 + 47 + 1 + 288 + 320 = 666.

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

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 197406580 + ... + 197406860.

Almost surely, 2^55471288320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55471288320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120741106464).

55471288320 is an abundant number, since it is smaller than the sum of its proper divisors (186010924608).

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

55471288320 is a wasteful number, since it uses less digits than its factorization.

55471288320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346 (or 315 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The spelling of 55471288320 in words is "fifty-five billion, four hundred seventy-one million, two hundred eighty-eight thousand, three hundred twenty".