55383699920208 has 160 divisors (see below), whose sum is σ = 161149126938624. Its totient is φ = 16238236800000.

The previous prime is 55383699920203. The next prime is 55383699920233. The reversal of 55383699920208 is 80202999638355.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55383699920203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80367508 + ... + 81053708.

Almost surely, 2^{55383699920208} 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 55383699920208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80574563469312).

55383699920208 is an abundant number, since it is smaller than the sum of its proper divisors (105765427018416).

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

55383699920208 is a wasteful number, since it uses less digits than its factorization.

55383699920208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691185 (or 691179 counting only the distinct ones).

The product of its (nonzero) digits is 251942400, while the sum is 69.

The spelling of 55383699920208 in words is "fifty-five trillion, three hundred eighty-three billion, six hundred ninety-nine million, nine hundred twenty thousand, two hundred eight".