55333715687500 has 84 divisors (see below), whose sum is σ = 121085680552200. Its totient is φ = 22125307600000.

The previous prime is 55333715687479. The next prime is 55333715687501. The reversal of 55333715687500 is 578651733355.

It is a happy number.

55333715687500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (55333715687501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 170400291 + ... + 170724709.

It is an arithmetic number, because the mean of its divisors is an integer number (1441496197050).

Almost surely, 2^{55333715687500} is an apocalyptic number.

55333715687500 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 55333715687500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60542840276100).

55333715687500 is an abundant number, since it is smaller than the sum of its proper divisors (65751964864700).

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

55333715687500 is an equidigital number, since it uses as much as digits as its factorization.

55333715687500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327182 (or 327155 counting only the distinct ones).

The product of its (nonzero) digits is 39690000, while the sum is 58.

The spelling of 55333715687500 in words is "fifty-five trillion, three hundred thirty-three billion, seven hundred fifteen million, six hundred eighty-seven thousand, five hundred".