55838408544 has 72 divisors (see below), whose sum is σ = 158826278520. Its totient is φ = 18608606208.

The previous prime is 55838408543. The next prime is 55838408581. The reversal of 55838408544 is 44580483855.

55838408544 is a `hidden beast` number, since 5 + 58 + 3 + 8 + 40 + 8 + 544 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55838408543) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1423239 + ... + 1461945.

It is an arithmetic number, because the mean of its divisors is an integer number (2205920535).

Almost surely, 2^55838408544 is an apocalyptic number.

It is an amenable number.

55838408544 is an abundant number, since it is smaller than the sum of its proper divisors (102987869976).

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

55838408544 is a wasteful number, since it uses less digits than its factorization.

55838408544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43732 (or 43721 counting only the distinct ones).

The product of its (nonzero) digits is 12288000, while the sum is 54.

The spelling of 55838408544 in words is "fifty-five billion, eight hundred thirty-eight million, four hundred eight thousand, five hundred forty-four".