55286869816512 has 1008 divisors, whose sum is σ = 185620408227072. Its totient is φ = 16276127662080.

The previous prime is 55286869816501. The next prime is 55286869816517. The reversal of 55286869816512 is 21561896868255.

55286869816512 is a `hidden beast` number, since 5 + 5 + 2 + 8 + 6 + 8 + 6 + 98 + 16 + 512 = 666.

It is a super-2 number, since 2×55286869816512² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (55286869816517) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 5478824587 + ... + 5478834677.

It is an arithmetic number, because the mean of its divisors is an integer number (184147230384).

Almost surely, 2^{55286869816512} 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 55286869816512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92810204113536).

55286869816512 is an abundant number, since it is smaller than the sum of its proper divisors (130333538410560).

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

55286869816512 is a wasteful number, since it uses less digits than its factorization.

55286869816512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10228 (or 10189 counting only the distinct ones).

The product of its digits is 497664000, while the sum is 72.

The spelling of 55286869816512 in words is "fifty-five trillion, two hundred eighty-six billion, eight hundred sixty-nine million, eight hundred sixteen thousand, five hundred twelve".