55109838080 has 144 divisors (see below), whose sum is σ = 144202270464. Its totient is φ = 20012605440.

The previous prime is 55109838023. The next prime is 55109838107. The reversal of 55109838080 is 8083890155.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12345929 + ... + 12350391.

It is an arithmetic number, because the mean of its divisors is an integer number (1001404656).

Almost surely, 2^55109838080 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 55109838080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72101135232).

55109838080 is an abundant number, since it is smaller than the sum of its proper divisors (89092432384).

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

55109838080 is a wasteful number, since it uses less digits than its factorization.

55109838080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5372 (or 5358 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 47.

The spelling of 55109838080 in words is "fifty-five billion, one hundred nine million, eight hundred thirty-eight thousand, eighty".