55262289680640 has 432 divisors, whose sum is σ = 218605952073600. Its totient is φ = 12626198396928.

The previous prime is 55262289680627. The next prime is 55262289680659. The reversal of 55262289680640 is 4608698226255.

55262289680640 is a `hidden beast` number, since 5 + 526 + 2 + 2 + 8 + 9 + 68 + 0 + 6 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 198154416 + ... + 198433104.

Almost surely, 2^{55262289680640} 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 55262289680640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109302976036800).

55262289680640 is an abundant number, since it is smaller than the sum of its proper divisors (163343662392960).

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

55262289680640 is a wasteful number, since it uses less digits than its factorization.

55262289680640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281182 (or 281165 counting only the distinct ones).

The product of its (nonzero) digits is 99532800, while the sum is 63.

The spelling of 55262289680640 in words is "fifty-five trillion, two hundred sixty-two billion, two hundred eighty-nine million, six hundred eighty thousand, six hundred forty".