55358568720 has 1440 divisors, whose sum is σ = 254209562880. Its totient is φ = 10883911680.

The previous prime is 55358568719. The next prime is 55358568731. The reversal of 55358568720 is 2786585355.

It is a happy number.

55358568720 is a `hidden beast` number, since 5 + 5 + 3 + 5 + 8 + 568 + 72 + 0 = 666.

It is a super-2 number, since 2×55358568720² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 907517490 + ... + 907517550.

Almost surely, 2^55358568720 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 55358568720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127104781440).

55358568720 is an abundant number, since it is smaller than the sum of its proper divisors (198850994160).

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

55358568720 is a wasteful number, since it uses less digits than its factorization.

55358568720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 10080000, while the sum is 54.

The spelling of 55358568720 in words is "fifty-five billion, three hundred fifty-eight million, five hundred sixty-eight thousand, seven hundred twenty".