55113809504838 has 384 divisors, whose sum is σ = 133917673144320. Its totient is φ = 14808164152320.

The previous prime is 55113809504827. The next prime is 55113809504881. The reversal of 55113809504838 is 83840590831155.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 119036305395 + ... + 119036305857.

It is an arithmetic number, because the mean of its divisors is an integer number (348743940480).

Almost surely, 2^{55113809504838} is an apocalyptic number.

55113809504838 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 55113809504838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66958836572160).

55113809504838 is an abundant number, since it is smaller than the sum of its proper divisors (78803863639482).

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

55113809504838 is a wasteful number, since it uses less digits than its factorization.

55113809504838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060 (or 1031 counting only the distinct ones).

The product of its (nonzero) digits is 20736000, while the sum is 60.

The spelling of 55113809504838 in words is "fifty-five trillion, one hundred thirteen billion, eight hundred nine million, five hundred four thousand, eight hundred thirty-eight".