55381275805344 has 96 divisors (see below), whose sum is σ = 149148165378240. Its totient is φ = 17986938826752.

The previous prime is 55381275805343. The next prime is 55381275805351. The reversal of 55381275805344 is 44350857218355.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (55381275805343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42624427 + ... + 43904490.

It is an arithmetic number, because the mean of its divisors is an integer number (1553626722690).

Almost surely, 2^{55381275805344} is an apocalyptic number.

It is an amenable number.

55381275805344 is an abundant number, since it is smaller than the sum of its proper divisors (93766889572896).

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

55381275805344 is a wasteful number, since it uses less digits than its factorization.

55381275805344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86529102 (or 86529094 counting only the distinct ones).

The product of its (nonzero) digits is 80640000, while the sum is 60.

The spelling of 55381275805344 in words is "fifty-five trillion, three hundred eighty-one billion, two hundred seventy-five million, eight hundred five thousand, three hundred forty-four".