55678730240 has 288 divisors, whose sum is σ = 156279170880. Its totient is φ = 18647875584.

The previous prime is 55678730227. The next prime is 55678730243. The reversal of 55678730240 is 4203787655.

It is a super-2 number, since 2×55678730240² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55678730243) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 243138446 + ... + 243138674.

It is an arithmetic number, because the mean of its divisors is an integer number (542636010).

Almost surely, 2^55678730240 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 55678730240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78139585440).

55678730240 is an abundant number, since it is smaller than the sum of its proper divisors (100600440640).

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

55678730240 is an frugal number, since it uses more digits than its factorization.

55678730240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328 (or 296 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 47.

The spelling of 55678730240 in words is "fifty-five billion, six hundred seventy-eight million, seven hundred thirty thousand, two hundred forty".