55939550306640 has 1280 divisors, whose sum is σ = 236450386206720. Its totient is φ = 10563535503360.

The previous prime is 55939550306609. The next prime is 55939550306677. The reversal of 55939550306640 is 4660305593955.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 10855722304 + ... + 10855727456.

It is an arithmetic number, because the mean of its divisors is an integer number (184726864224).

Almost surely, 2^{55939550306640} 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 55939550306640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118225193103360).

55939550306640 is an abundant number, since it is smaller than the sum of its proper divisors (180510835900080).

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

55939550306640 is a wasteful number, since it uses less digits than its factorization.

55939550306640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5892 (or 5886 counting only the distinct ones).

The product of its (nonzero) digits is 65610000, while the sum is 60.

The spelling of 55939550306640 in words is "fifty-five trillion, nine hundred thirty-nine billion, five hundred fifty million, three hundred six thousand, six hundred forty".